Add main functionalities section to README and action.yml

[mustafacco7]

Add a new section "Main functionalities" to describe the main functionalities provided by the cache action.

• README.md:

  • Add a new section "Main functionalities" to describe the main functionalities provided by the cache action.
  • Include details about caching dependencies and build outputs, restoring cache, saving cache, cross-OS caching, failing on cache miss, and lookup-only mode.

• action.yml:

  • Add a new section "main functionalities" to describe the main functionalities provided by the cache action.
  • Include details about caching dependencies and build outputs, restoring cache, saving cache, cross-OS caching, failing on cache miss, and lookup-only mode.

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For more details, open the Copilot Workspace session.