Describe the bug

• We currently only have tiering implementation for warm indices.
• The current nomenclature for feature flags and settings are too generic and cant differentiate between hot and warm indices.

Related component

No response

To Reproduce

1. Go to '...'
2. Click on '....'
3. Scroll down to '....'
4. See error

Expected behavior

We want the nomenclature to clearly differentiate between hot and warm tiring.

Additional Details

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Host/Environment (please complete the following information):

• OS: [e.g. iOS]
• Version [e.g. 22]

Additional context
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