feat: pkg/util/github/secrets

[jxs1211]

Pre-Checklist

Note: please complete ALL items in the following checklist.

• I have read through the CONTRIBUTING.md documentation.
• My code has the necessary comments and documentation (if needed).
• I have added relevant tests

Description

add ut for secrets

Related Issues

see #833 for the details

New Behavior (screenshots if needed)

[going@dev github]$ go tool cover -func=coverage.out
...
github.com/devstream-io/devstream/pkg/util/github/secrets.go:14:                AddRepoSecret                           92.3%
github.com/devstream-io/devstream/pkg/util/github/secrets.go:44:                encryptSecretWithPublicKey              84.6%
github.com/devstream-io/devstream/pkg/util/github/secrets.go:76:                DeleteRepoSecret                        90.0%
github.com/devstream-io/devstream/pkg/util/github/secrets.go:95:                RepoSecretExists                        90.0%
...
total:                                                                          (statements)                            36.8%

[xavier-hou]

@jxs1211 Many thanks to your test! Please merge the redundant git commits.

[jxs1211]

@jxs1211 Many thanks to your test! Please merge the redundant git commits.

@HXCGIT
the previous 2 prs(#905, https://github.com/devstream-io/devstream/pull/909/commits) haven't been merged yet, this pr is created by checkout the 2 previous pr, I will try to handle the redundant commits on this pr.

[xavier-hou]

@jxs1211 I think each individual PR should be checked out from main branch. This allows for independent modification and merging of PR~

[jxs1211]

@jxs1211 I think each individual PR should be checked out from main branch. This allows for independent modification and merging of PR~

yes, I will keep it in my mind next time.