ci: create shared build workspace and filters

[Lewluu]

Pull Request Description

Implement shared build workspace. Currently, each runner contain an independed build workspace with cache. This results in heavy ocuppied space per runnner workspace. With this implementation, current runners can build in parallel using the same build workspace as well, using project build path .lock file mecahnism and storing non built projects and re-checks.
Another feature is the filtering of projects to build based on paths from the git changes.

Please replace this with a detailed description and motivation of the changes.
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PR Type

• Bug fix (change that fixes an issue)
• New feature (change that adds new functionality)
• Breaking change (has dependencies in other repos or will cause CI to fail)

PR Checklist

• I have followed the Coding style guidelines
• I have complied with the Submission Checklist
• I have performed a self-review of the changes
• I have commented my code, at least hard-to-understand parts
• I have build all projects affected by the changes in this PR
• I have tested in hardware affected projects, at the relevant boards
• I have signed off all commits from this PR
• I have updated the documentation (wiki pages, ReadMe etc), if applies

[CLAassistant]

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1 out of 2 committers have signed the CLA.

✅ Lewluu
❌ cseci
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