Improve conan package caching in CI

[nikobockerman]

No description provided.

[Copilot]

Pull request overview

This PR improves Conan package caching in CI by implementing custom cache management instead of relying on the conan-io/setup-conan action. The changes introduce manual cache restoration and saving with intelligent cleanup of unused packages to optimize cache size and efficiency.

Key Changes:

• Replaced conan-io/setup-conan with custom cache management using GitHub Actions cache
• Added cache cleanup step to remove unused Conan recipes and binaries based on LRU (1 hour)
• Reorganized workflow to set up mise tools earlier and added finalization step for cache saving

Reviewed changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
.github/workflows/cpp-build-test-run.yaml	Reorganized workflow steps to set up mise earlier, added conan-cache-key-prefix input, and introduced cmake-project-finalize step
.github/actions/cmake-project-setup/action.yaml	Replaced conan-io/setup-conan action with manual cache restoration, added Conan profile detection, and exposed cache-matched-key output
.github/actions/cmake-project-setup/init.sh	New script to initialize CONAN_HOME environment variable and output cache path
.github/actions/cmake-project-finalize/action.yaml	New action to finalize and save Conan cache with conditional logic based on package hash changes
.github/actions/cmake-project-finalize/init.sh	New script to clean up unused Conan packages, generate package hash, and determine if cache should be saved

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[Copilot]

Pull request overview

Copilot reviewed 5 out of 5 changed files in this pull request and generated 3 comments.

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[Copilot]

Pull request overview

Copilot reviewed 5 out of 5 changed files in this pull request and generated 3 comments.

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[Copilot]

Pull request overview

Copilot reviewed 5 out of 5 changed files in this pull request and generated 2 comments.

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