chore: dbu application to commands script v1

[smereu]

Description

In creating the v1 version of the original dbuapplication file the following changes were made

• File dbuapplication has been renamed to commands_script (it only invokes runscriptfile stub)
• Service GRPCDbuApplicationService has been renamed GRPCCommandsScriptService
• internal method has been renamed from run_script to run_script_file

Issue linked

Please mention the issue number or describe the problem this pull request addresses.

Checklist

• I have tested my changes locally.
• I have added necessary documentation or updated existing documentation.
• I have followed the coding style guidelines of this project.
• I have added appropriate unit tests.
• I have reviewed my changes before submitting this pull request.
• I have linked the issue or issues that are solved to the PR if any.
• I have assigned this PR to myself.
• I have added the minimum version decorator to any new backend method implemented.
• I have made sure that the title of my PR follows Conventional commits style (e.g. feat: extrude circle to cylinder)

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 95.21%. Comparing base (9a24218) to head (9d7c015).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2395      +/-   ##
==========================================
+ Coverage   95.18%   95.21%   +0.03%     
==========================================
  Files         168      168              
  Lines       11290    11290              
==========================================
+ Hits        10746    10750       +4     
+ Misses        544      540       -4     

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[RobPasMue]

LGTM!