Backstage templates for Knative Functions

[aliok]

TODO:

• ~GH automation to send a PR with function template changes~ No need, thanks to verify codegen GH action
• [x] Documentation to enable the templates (currently in this repo, later in Knative website)
• [x] Documentation to use the templates (currently in this repo, later in Knative website)
• [x] Prow to run code generation verification
• [x] Do not release in case of generation verification problem
• [x] Release procedure (for updating the func version): https://github.com/knative/release/pull/334

[aliok]

@pierDipi Code generation verification is not done in Prow jobs in other repos, right? Similarly, code generation verification is not done during a release in other repos?

[pierDipi]

Code generation verification is not done in Prow jobs in other repos, right?

Yes, that part is based on the existence of the hack/verify-codegen.sh file (which is not present in this repo), https://github.com/knative/hack?tab=readme-ov-file#using-the-presubmit-testssh-helper-script, point 2

Similarly, code generation verification is not done during a release in other repos?

no, it is done, this runs in the build tests job and those run before the release

[knative-prow[bot]]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: aliok, pierDipi

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Needs approval from an approver in each of these files: - ~~[OWNERS](https://github.com/knative-extensions/backstage-plugins/blob/main/OWNERS)~~ [aliok,pierDipi] Approvers can indicate their approval by writing `/approve` in a comment Approvers can cancel approval by writing `/approve cancel` in a comment

[aliok]

/override "Code Style / style / Golang / Lint"

[knative-prow[bot]]

@aliok: /override requires failed status contexts, check run or a prowjob name to operate on. The following unknown contexts/checkruns were given:

• Code Style / style / Golang / Lint

Only the following failed contexts/checkruns were expected:

• EasyCLA
• build-tests_backstage-plugins_main
• e2e-tests_backstage-plugins_main
• style / Golang / Lint
• style / suggester / github_actions
• tide
• unit-tests_backstage-plugins_main

If you are trying to override a checkrun that has a space in it, you must put a double quote on the context.

In response to [this](https://github.com/knative-extensions/backstage-plugins/pull/106#issuecomment-2428685847): >/override "Code Style / style / Golang / Lint" Instructions for interacting with me using PR comments are available [here](https://git.k8s.io/community/contributors/guide/pull-requests.md). If you have questions or suggestions related to my behavior, please file an issue against the [kubernetes-sigs/prow](https://github.com/kubernetes-sigs/prow/issues/new?title=Prow%20issue:) repository.

[aliok]

/override "style / Golang / Lint"

[knative-prow[bot]]

@aliok: Overrode contexts on behalf of aliok: style / Golang / Lint

In response to [this](https://github.com/knative-extensions/backstage-plugins/pull/106#issuecomment-2428686725): >/override "style / Golang / Lint" Instructions for interacting with me using PR comments are available [here](https://git.k8s.io/community/contributors/guide/pull-requests.md). If you have questions or suggestions related to my behavior, please file an issue against the [kubernetes-sigs/prow](https://github.com/kubernetes-sigs/prow/issues/new?title=Prow%20issue:) repository.