chore: [v1] Migrating testing and release workflows to GitHub Actions.

[ruisebas]

Description

This PR adds GitHub Action workflows for the following CD/CI operations for the v1 version:

• Build & Unit Tests
• Fortify Scan
• Release

General Checklist

• Added new tests to cover change, if needed
• Build succeeds with all target using Swift Package Manager
• All unit tests pass
• All integration tests pass
• Security oriented best practices and standards are followed (e.g. using input sanitization, principle of least privilege, etc)
• Documentation update for the change if required
• PR title conforms to conventional commit style
• New or updated tests include Given When Then inline code documentation and are named accordingly testThing_condition_expectation()
• If breaking change, documentation/changelog update with migration instructions

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[codecov-commenter]

Codecov Report

Merging #3109 (b06308b) into v1 (72cb7d4) will decrease coverage by 9.89%.
The diff coverage is n/a.

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@@            Coverage Diff             @@
##               v1    #3109      +/-   ##
==========================================
- Coverage   73.76%   63.88%   -9.89%     
==========================================
  Files          50      722     +672     
  Lines        1441    23193   +21752     
==========================================
+ Hits         1063    14816   +13753     
- Misses        378     8377    +7999     

Flag	Coverage Δ
API_plugin_unit_test	62.98% <ø> (?)
AWSPluginsCore	73.69% <ø> (-0.07%)	⬇️
Amplify	51.16% <ø> (?)
Analytics_plugin_unit_test	72.58% <ø> (?)
Auth_plugin_unit_test	83.80% <ø> (?)
DataStore_plugin_unit_test	81.17% <ø> (?)
Geo_plugin_unit_test	57.87% <ø> (?)
Predictions_plugin_unit_test	33.58% <ø> (?)
Storage_plugin_unit_test	59.53% <ø> (?)

Flags with carried forward coverage won't be shown. Click here to find out more.

see 673 files with indirect coverage changes

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