Create automatic releases

[Eugene]

Is your feature request related to a problem? Please describe.
I should manually create build packages and exe files to make a release.

Describe the solution you'd like
CI should be configured in the following way:

1. Push to branch that starts with feature/ or bugfix/:
   1. Unit tests should run.
   2. Linting should run.
2. Merge branch into develop branch:
   1. All steps from previous option.
   2. Functional tests should run (using uses: ./).
3. Merge develop into staging:
   1. All steps from previous option.
   2. Beta release should be created:
      1. Version should be increased + -beta1 suffix.
      2. Create branch with version/ prefix.
      3. Create PR of version branch with the changes.
4. Merge version/ PR:
   1. Create release in GitHub /releases page.
   2. Functional tests should run using this release.
5. Create tag with version:
   1. All steps from option 2.
   2. Stable release should be created:
      1. Tag name should be used instead of *-beta1 release.
      2. Create branch with version/ prefix.
      3. Create PR of version branch with the changes.

Describe alternatives you've considered
Just do all the stuff manually.

Additional context
N/A