Remote reporting of package build times and success

[csweichel]

Description

This PR enables the remote tracking of package build times and their success rate. To this end it introduces a (long overdue) remote reporter to leeway. As a first server-side implementation of this remote reporter, this PR adds an API-gateway accessibly lambda which pushes metrics to CloudWatch. This is a first step towards providing insight into our build speeds and failure rates. /hold

[codecov[bot]]

Codecov Report

Merging #156 (79ffa83) into main (3bad410) will decrease coverage by 0.01%. The diff coverage is 0.00%.

@@           Coverage Diff            @@
##            main    #156      +/-   ##
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- Coverage   8.58%   8.58%   -0.01%     
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  Files         20      20              
  Lines       3320    3321       +1     
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  Hits         285     285              
- Misses      2983    2984       +1     
  Partials      52      52