feat: migrate from standalone actions

[ReenigneArcher]

Description

TODO:

• migrate remaining actions
• release via ci
• branch protection rules

Screenshot

Issues Fixed or Closed

• Resolves actions: move release actions to single repo roadmap#79

Type of Change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Dependency update (updates to dependencies)
• Documentation update (changes to documentation)
• Repository update (changes to repository files, e.g. .github/...)

Checklist

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have added or updated the in code docstring/documentation-blocks for new or existing methods/components

[codecov]

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[sonarqubecloud]

Quality Gate passed

Issues
23 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[Copilot]

Pull Request Overview

This PR migrates several standalone GitHub actions into a unified, reusable monorepo‐style structure. Key changes include the addition of new action implementations (for Python setup, release setup, Homebrew release, release creation, release changelog, and Facebook posting) and corresponding tests and CI configuration updates.

Reviewed Changes

Copilot reviewed 54 out of 60 changed files in this pull request and generated 2 comments.

File	Description
tests/...	New test modules added for each action (setup_python, release_setup, release_homebrew, release_create, release_changelog, facebook_post) to validate expected behavior.
actions/...	Multiple new action directories have been introduced with Dockerfiles, composite workflows, and action metadata to support the migration.
.github/workflows	CI configuration files updated to incorporate the new actions and matrix-based testing.

[Copilot]

Consider handling ISO timestamps that end with a 'Z' explicitly (for example, by replacing 'Z' with '+00:00') before calling fromisoformat, as some Python versions may raise a ValueError with a trailing 'Z'.

Suggested change

	# timestamp "2024-07-14T13:17:25-04:00"
	# timestamp "2024-07-14T13:17:25-04:00"
	if iso_timestamp.endswith("Z"):
	iso_timestamp = iso_timestamp.replace("Z", "+00:00")