ci: establish official experimental releases for v9

[Hotell]

Previous Behavior

no official way/process for experimental releases for v9

New Behavior

• official way/process to do experimental releases for v9 without affecting upstream
• read the process https://github.com/microsoft/fluentui/pull/35630/files#diff-56f63357a1e924a0fa80c1dcc9d1690e10fc73da36bb24a6ff13c994a14aa0a8

Gist of process:

Versioning Scheme

Experimental versions follow this pattern:
<base-version>-experimental.<feature-name>.<timestamp>-<hash>

• <base-version>: Current version based on @fluentui/react-components (e.g., 9.72.9).
• <feature-name>: The name provided when creating the branch.
• <date>: YYYYMMDD
• <hash>: Short commit hash.

Example: 9.72.9-experimental.my-feature.20240520-a1b2c3d

Usage

To install an experimental version, use the experimental tag or the specific version:

yarn add @fluentui/react-components@experimental
# OR
yarn add @fluentui/react-components@9.72.9-experimental.my-feature.20240520-a1b2c3d

Technical details

• version-bump generator adds new version option to explicitly provide custom version bump
• manually triggered ADO release pipeline is added
• a new gha manually dispatched workflow is added to kickoff experimental feature process ( might not work because GHA access - if it wont work will be addressed via local CLI as a follow up )

Related Issue(s)

• Fixes #

[github-actions]

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[github-actions]

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