[no-jira]: automatize regression build

[Arkariang]

📲 What

• Added new workflow to CI to create a new internal build after a merge takes place on regression branches
• It will act in the branches with the format: regression-x.x

🤔 Why

• Basically to not have to relay on anybody environment to create a regression build
• On the private environment you will see the new regression branch created
  
• A new build will be publish on Firebase

📋 QA

• on the private CI environment you see triggered for regression branch a new job, created a new build and publish it on firebase internal lane.

• If you want to QA the entire workflow, create a branch from this one with format regression-x-y and wait until the public and private CI environments complete

[codecov]

Codecov Report

Merging #1397 (3d09fea) into master (e26eaa2) will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master    #1397   +/-   ##
=========================================
  Coverage     72.28%   72.28%           
  Complexity      736      736           
=========================================
  Files           210      210           
  Lines          6083     6083           
  Branches        391      391           
=========================================
  Hits           4397     4397           
  Misses         1548     1548           
  Partials        138      138           

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[leighdouglas]

This is great! 🎉