Add a Helm Chart and CI Processes

[jonathanio]

Add the initial Helm Chat for the dashboard application, which can configure the deployment and budget, the service and ingress resources, and an initial network policy.

Additionally, configure the CI tooling for Taskfiles, pre-commit, and GitHub Workflows, to check, test, build, and publish the Helm Charts too.

Checklist

Before raising or requesting a review of the pull request, please check and confirm the following items have been performed, where possible:

• I have performed a self-review of my code and run any tests locally to check
• I have added tests that prove that any changes are effective and work correctly
• I have made corresponding changes, as needed, to the repository documentation
• Each commit in, and this pull request, have meaningful subjects and bodies for context
• I have added release/..., type/..., and changes/... labels, as needed, to this pull request

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 8 lines in your changes missing coverage. Please review.

Project coverage is 14.79%. Comparing base (d70f651) to head (470d108).

❗ Current head 470d108 differs from pull request most recent head a1d1353

Please upload reports for the commit a1d1353 to get more accurate results.

Files	Patch %	Lines
internal/serve/alive/main.go	0.00%	7 Missing ⚠️
internal/serve/healthz/main.go	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main       #6      +/-   ##
==========================================
- Coverage   15.10%   14.79%   -0.32%     
==========================================
  Files          13       13              
  Lines         331      338       +7     
==========================================
  Hits           50       50              
- Misses        281      288       +7     

Flag	Coverage Δ
unit-tests	14.79% <0.00%> (-0.32%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files	Coverage Δ
internal/serve/healthz/main.go	0.00% <0.00%> (ø)
internal/serve/alive/main.go	0.00% <0.00%> (ø)