Add alternative GitHub Workflows

[CodingDepot]

This PR adds GitHub workflow files to be used as an alternative to some Tekton Pipelines.
The following two Workflows are added:

• local-analysis: matches the analysis-pipeline in Tekton, which creates both the coverage data and the local spotbugs analysis results and pushes them to Codacy
• release: matches the release-pipeline in Tekton, which builds a Docker image and creates a SLSA attestation to verify the artifacts later

It is advised to enable either the GitHub workflows or the Tekton pipelines to prevent doubling the work done. The other Tekton pipelines can continue to be used considering the following:

• codacy-pipeline: the pipeline that checks new PRs against Codacy Quality gates can continue to be used. However, as Codacy pushes its provider integrations more and more, this functionality could now be better fine-tuned using integrations in teh Codacy dashboard
• deploy-pipeline: this pipeline triggers when a new image is published in DockerHub, checks the attestation of the image and updates the Kubernetes deployment to use the new version.

In order to enable or disable any Tekton Pipelines, it is advised to just delete the respective triggers that trigger the pipeline run from the GitHub webhook.

[codacy-production]

Coverage summary from Codacy

See diff coverage on Codacy

Coverage variation	Diff coverage
✅ +0.00% (target: -1.00%)	✅ ∅

Coverage variation details

	Coverable lines	Covered lines	Coverage
Common ancestor commit (f11d9bb)	43	12	27.91%
Head commit (f5e0daa)	43 (+0)	12 (+0)	27.91% (+0.00%)

Coverage variation is the difference between the coverage for the head and common ancestor commits of the pull request branch: <coverage of head commit> - <coverage of common ancestor commit>

Diff coverage details

	Coverable lines	Covered lines	Diff coverage
Pull request (#11)	0	0	∅ (not applicable)

Diff coverage is the percentage of lines that are covered by tests out of the coverable lines that the pull request added or modified: <covered lines added or modified>/<coverable lines added or modified> * 100%

See your quality gate settings    Change summary preferences

---

_{🚀 Don’t miss a bit, follow what’s new on Codacy.}

_{Codacy stopped sending the deprecated coverage status on June 5th, 2024. Learn more}