Read Go build info from the binary

[lucacome]

Proposed changes

It wouldn't let me re-open #179

Problem: We're injecting information about the enviroment at build time. This could be unreliable and doesn't need to be done since go has all this info at build time already.

Solution: Get the info directly from the build.

Checklist

Before creating a PR, run through this checklist and mark each as complete.

• I have read the CONTRIBUTING doc
• I have added tests that prove my fix is effective or that my feature works
• I have checked that all unit tests pass after adding my changes
• I have updated necessary documentation
• I have rebased my branch onto main
• I will ensure my PR is targeting the main branch and pulling from my branch from my own fork

Release notes

If this PR introduces a change that affects users and needs to be mentioned in the release notes,
please add a brief note that summarizes the change.

NONE

[codecov]

Codecov Report

Attention: Patch coverage is 80.00000% with 4 lines in your changes missing coverage. Please review.

Project coverage is 87.74%. Comparing base (99a4532) to head (6e30f48).

Files	Patch %	Lines
cmd/gateway/commands.go	80.00%	4 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2319      +/-   ##
==========================================
- Coverage   87.76%   87.74%   -0.03%     
==========================================
  Files          96       96              
  Lines        6793     6813      +20     
  Branches       50       50              
==========================================
+ Hits         5962     5978      +16     
- Misses        774      778       +4     
  Partials       57       57              

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[salonichf5]

lgtm