This PR add support for a URI scheme able to easily fetch any resources from cycloid.

The schema is as follows:

cy://rest/path?param=value

The path must respect the API schema, but some shortcuts has been made to make it easily writable:

cred, credential   -> credentials
project            -> projects
env, environment   -> environments
component          -> components

There are two usecases for this feature:

1. Interpolate at runtime credentials and more in stack files, mainly ment for kubernetes file created via templating using the cy uri interpolate command.
2. Fetch any resource from the API, even if the route is not implemented in the CLI using the cy uri get commmand.

The implementation is made as such:

The new package interpolator contains all the logic related to uri interpolation. The logic is decoupled in those components:

• resources.Reference will parse an URI to extract the path and the parameters in a struct format that will be used by resolvers.
• resolvers are responsible of fetching the data from a ref. There are one implementation of the interface that is the httpresolver to fetch from the API. Another one that will use mocks for testing will be made.
• formatters will serialize data in a specified format (json and yaml have been implemented, could also be hcl, ini, whatever). The formatters must return a string. Formatter will parse option parameters whose key match their format name format=option(=value)?), available format and option parsing is implemented here. If any formatter receive a single final value (string, bool, int, etc...) it should return it as a simple string.
• transformers are function responsible to help the user to transform the text for use in the interpolation. Examples that are already implemented are:
  • lpad: add indentation to the output (replace helm indent filter)
  • nlpad: add a newline before calling lpad (replace helm nindent)
  • base64: encode the output in base64 (useful for kubernetes secrets)