Move build workflow from CircleCI to GitHub Actions

[rochdev]

What does this PR do?

Move build workflow from CircleCI to GitHub Actions.

Motivation

There are several advantages of switching to GitHub Actions for this type of project:

• Built-in action to easily and quickly switch Node version within a job. This means we can significantly reduce the parallelism of the jobs and use larger machines which are less likely to fail. It also means that we are back under the Codecov quota of 100 reports per commit, so we no longer need to merge reports manually.
• Built-in action to test ARM with Qemu. This is difficult in CircleCI since the type of runner for ARM is completely different.
• Reusable actions that can be pulled from other repositories. CircleCI orbs have to be published to a registry.
• Reusable workflows and JavaScript actions, both of which don't have an equivalent in CircleCI.
• Integrated directly in GitHub.
• Much larger ecosystem at this point.
• Windows and Mac machines start a lot faster.
• To my knowledge everyone on the team wants this change.

This PR focused only on the build workflow which is now split into separate workflows:

• Project: This is for any jobs for the entire projects, for example static analysis or integration tests.
• Tracing: This is for any jobs related only to tracing. Right now it was translated directly from CircleCI so it also includes profiling which we should move out later.
• Plugins: This is for our integrations. We could also move the jobs under Tracing but for now I felt like it was easier to use to group them in a single workflow.
• Core: This is for tests for common components that can be used by any product.

Upstream tests and benchmarks will be done in separate PRs.

Additional Notes

• Cucumber is also failing on master as there was a new version released which breaks.
• I had to bump pg minimum version to make it pass, but this shouldn't be an issue since older versions only support up to Node 4 which we don't support .

[codecov]

Codecov Report

Merging #1974 (7ab565e) into master (a178d84) will increase coverage by 12.21%.
The diff coverage is 100.00%.

@@             Coverage Diff             @@
##           master    #1974       +/-   ##
===========================================
+ Coverage   80.92%   93.13%   +12.21%     
===========================================
  Files         200      195        -5     
  Lines        8195     8044      -151     
===========================================
+ Hits         6632     7492      +860     
+ Misses       1563      552     -1011     

Impacted Files	Coverage Δ
packages/datadog-instrumentations/src/pg.js	87.80% <100.00%> (+68.29%)	⬆️
packages/datadog-plugin-winston/src/index.js
...kages/datadog-instrumentations/src/helpers/hook.js
packages/datadog-instrumentations/src/winston.js
...es/datadog-instrumentations/src/helpers/promise.js
packages/dd-trace/src/profiling/index.js
...datadog-instrumentations/src/helpers/instrument.js
packages/datadog-plugin-kafkajs/src/index.js
packages/datadog-plugin-limitd-client/src/index.js	100.00% <0.00%> (ø)
packages/datadog-plugin-pino/src/index.js	100.00% <0.00%> (ø)
... and 24 more

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