### Motivation and Context

<!-- Thank you for your contribution to the copilot-chat repo!
Please help reviewers and future users, providing the following
information:
  1. Why is this change required?
  2. What problem does it solve?
  3. What scenario does it contribute to?
  4. If it fixes an open issue, please link to the issue here.
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This PR adds support for Stepwise Planner to enable MRKL style planning
in Chat Copilot.
See microsoft/semantic-kernel#1468 for details
on how Stepwise Planner works.
- Stepwise Planner will only be called if a plugin has been enabled.
This follows the same logic as Action/Sequential Planner.
- Added `StepwiseStepView` and `StepwiseThoughtProcess` components to
render friendly view of Stepwise thought process in prompt dialog.

### Description

<!-- Describe your changes, the overall approach, the underlying design.
These notes will help understanding how your code works. Thanks! -->

If Planner returns with thought process:

![image](https://github.com/microsoft/chat-copilot/assets/125500434/ef8b2dee-4bfb-44f8-a363-b8469196ebce)


![image](https://github.com/microsoft/chat-copilot/assets/125500434/88cdc5a9-ba9f-4341-bd13-80d3f1532951)

![image](https://github.com/microsoft/chat-copilot/assets/125500434/72027814-7085-4346-944d-999284e84a12)

If Planner returns with suggested response or information 

![image](https://github.com/microsoft/chat-copilot/assets/125500434/31a2b011-7590-4d82-86a3-a1e5799e019b)

Specific Changes:
- CopilotChatPlanner class:
- The planner now includes support for the new Stepwise Planner and
StepwiseStep model.
- The planner now includes bailout functionality, which allows the
planner to request additional user input if needed.
- ProposedPlan model:
  - Updated to include a new PlanType called Stepwise.
- PlannerOptions:
  - Updated to include a new StepwisePlannerConfig property.
- ChatMemoryController:
  - Updated to sanitize log input by removing new line characters.
- ExternalInformationSkill class:
- Updated to use the Stepwise Planner if the PlannerOptions.Type is set
to Stepwise.
- appsettings.json file:
- Updated to include a new configuration section, StepwisePlannerConfig,
which includes settings for the Stepwise Planner feature.
- TextUtils file:
- Added utility function to format text containing `\n` line breaks into
paragraphs.
  
### Contribution Checklist

<!-- Before submitting this PR, please make sure: -->

- [x] The code builds clean without any errors or warnings
- [x] The PR follows the [Contribution
Guidelines](https://github.com/microsoft/copilot-chat/blob/main/CONTRIBUTING.md)
and the [pre-submission formatting
script](https://github.com/microsoft/copilot-chat/blob/main/CONTRIBUTING.md#development-scripts)
raises no violations
~~- [ ] All unit tests pass, and I have added new tests where possible~~
- [x] I didn't break anyone 😄

### Motivation and Context

<!-- Thank you for your contribution to the copilot-chat repo!
Please help reviewers and future users, providing the following
information:
  1. Why is this change required?
  2. What problem does it solve?
  3. What scenario does it contribute to?
  4. If it fixes an open issue, please link to the issue here.
-->

This PR adds support for Stepwise Planner to enable MRKL style planning
in Chat Copilot.
See microsoft/semantic-kernel#1468 for details
on how Stepwise Planner works.
- Stepwise Planner will only be called if a plugin has been enabled.
This follows the same logic as Action/Sequential Planner.
- Added `StepwiseStepView` and `StepwiseThoughtProcess` components to
render friendly view of Stepwise thought process in prompt dialog.

### Description

<!-- Describe your changes, the overall approach, the underlying design.
These notes will help understanding how your code works. Thanks! -->

If Planner returns with thought process:

![image](https://github.com/microsoft/chat-copilot/assets/125500434/ef8b2dee-4bfb-44f8-a363-b8469196ebce)


![image](https://github.com/microsoft/chat-copilot/assets/125500434/88cdc5a9-ba9f-4341-bd13-80d3f1532951)

![image](https://github.com/microsoft/chat-copilot/assets/125500434/72027814-7085-4346-944d-999284e84a12)

If Planner returns with suggested response or information 

![image](https://github.com/microsoft/chat-copilot/assets/125500434/31a2b011-7590-4d82-86a3-a1e5799e019b)

Specific Changes:
- CopilotChatPlanner class:
- The planner now includes support for the new Stepwise Planner and
StepwiseStep model.
- The planner now includes bailout functionality, which allows the
planner to request additional user input if needed.
- ProposedPlan model:
  - Updated to include a new PlanType called Stepwise.
- PlannerOptions:
  - Updated to include a new StepwisePlannerConfig property.
- ChatMemoryController:
  - Updated to sanitize log input by removing new line characters.
- ExternalInformationSkill class:
- Updated to use the Stepwise Planner if the PlannerOptions.Type is set
to Stepwise.
- appsettings.json file:
- Updated to include a new configuration section, StepwisePlannerConfig,
which includes settings for the Stepwise Planner feature.
- TextUtils file:
- Added utility function to format text containing `\n` line breaks into
paragraphs.
  
### Contribution Checklist

<!-- Before submitting this PR, please make sure: -->

- [x] The code builds clean without any errors or warnings
- [x] The PR follows the [Contribution
Guidelines](https://github.com/microsoft/copilot-chat/blob/main/CONTRIBUTING.md)
and the [pre-submission formatting
script](https://github.com/microsoft/copilot-chat/blob/main/CONTRIBUTING.md#development-scripts)
raises no violations
~~- [ ] All unit tests pass, and I have added new tests where possible~~
- [x] I didn't break anyone 😄

…n/webapp/fluentui/react-components-9.58.1

build(deps): bump @fluentui/react-components from 9.58.0 to 9.58.1 in /webapp