gh/workflows: pr: add devenv build test

[EmbeddedAndroid]

Summary of Changes

Add a github workflow to build test the devenv containers. This will only trigger when changes are made under the devenv/ directory.

stacks-network/sbtc#211 highlights the need for basic build testing.

Testing

Risks

None, as this is adding a test

How were these changes tested?

Tested actions on fork of repo

What future testing should occur?

We may want to publish built container images to a registry.

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules

[codecov]

Codecov Report

Merging #212 (cca5caa) into main (1ae78d0) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main     #212   +/-   ##
=======================================
  Coverage   38.56%   38.56%           
=======================================
  Files          44       44           
  Lines        5072     5072           
  Branches       23       23           
=======================================
  Hits         1956     1956           
  Misses       3114     3114           
  Partials        2        2           

Flag	Coverage Δ
unittests	89.07% <ø> (ø)

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[CAGS295]

LGTM. At some point, we must also check that services reach a 'ready' state.

It bothers me that changes to source code in the services, in most cases, will be the culprit of Devenv failing to build/run. This build job will only run on changes to the devenv dir.

For example, the few times changing romeo/config.rs has broken devnenv due to the config.toml needing to be updated.

Or more extreme cases like #210 have little to do with this repo.

[friedger]

LGTM, if needed we can run the build daily or weekly.