[CADC-13697] Science Platform CI/CD Updates

[shinybrar]

Changes

• helm: added a new helm chart for dev ivoa dev registry
• helm: added new base template to provision a developer storage
• helm: added placeholder helm tests which can be run via helm test base, this is currently a work-in-progress.
• CI/CD: Implemented basic CI through Github Actions, more to come soon.
• CI/CD: Implemented conventional commit standards, both via .pre-commit-config.yaml and also a separate commit message check in Github Actions
• CI/CD: With this PR, we also plan to integrate / test how github action changes will be propagated and introduced from forks.
• base: updated base chart values to better reflect possible configurations via dev.overrides and added docs
• helm: Added docs made via helm-docs in the base template, with the goal to have updated/auto-generated all docs for helm charts. This feature uses the README.md.gotpl file as a documentation slug.
• helm: Added support for NOTES.txt file, which makes all the post-installation checks and documentation print in the terminal after a helm install.
• linting: Cleaned up end-of-file newline changes via pre-commit.

[shinybrar]

@at88mph

All changes requested in the PR, except the one commented above have been made.

Additionally,

• Fixed base tests, which run successfully now with required service account fixtures being deleted after tests are completed by helm itself, see here. The main addition is annotations for helm.sh/[hook-delete-policy|hook-weight] which describe the order in which the test actions take place, and the final cleanup at the end.
• Added CI, where I setup a K8S cluster, install helm, install the base chart and then run the tests as well, see the run logs here and the source code here.
• Added checks in pre-commit check for helm-docs to be kept up-to-date. For now, this is only enabled for base and registry charts.
• Performed all of the end-of-file-fixes and trailing-whitespace fixes for the entire repository to pass lint checks. These will be only sources of merge-conflicts.
• Enabled the filesystem config block for cavern, since its required in the current implementation and thus needed to build a template.

Questions

• Should we fail CI/CD if helm docs are not up-to-date or auto generate them based on the README.md.gotpl and values.yml and perform a bot commit to pass the CI/CD