Implement PR closing and reopening #304

Fixes #301.

~~Try to not get a 403 as response, this likely means that the user is closing/reopening the PR as a repo owner instead of doing it as the PR owner as it should be expected.~~ (See the upstream gitea issue.)

@YakoYakoYokuYoku can you apply changes of #291 to your pull ?

Try to not get a 403 as response.

In my tests it works. You could show a more descriptive error in case it fails, though I think it's fine as it is.

Empty arguments so tea deletes/reopens the current PR.

I think this should be in another PR, as this requires detection what the current PR is. This is a feature that is generally neat to have (such as in tea open pull)

Empty arguments so tea deletes/reopens the current PR.

I think this should be in another PR, as this requires detection what the current PR is. This is a feature that is generally neat to have (such as in tea open pull)

pull review commands will ned this too - something teaContext should ;)

@YakoYakoYokuYoku I agree with moving this into it's own pull

@YakoYakoYokuYoku if you need help to apply latest changes to your pull - just ask

I wasn't having any issues with merging commits, I was taking my time setting up my local Gitea instance for testing with this PR.

Testing revealed that I can close a PR, if I have permissions in the repo to do so. I suppose that this PR is for closing PRs as the repo owner, not the PR owner 🙃.

Oh, now I get it & can reproduce. That's indeed an (upstream API) issue:
You should certainly be allowed to close your own PR.

I think we can merge this anyway and fix it upstream
https://github.com/go-gitea/gitea/issues/14025

Since the PR 403 issue is not a blocker for this PR I also agree for merging.

 	Usage:       "List, create, checkout and clean pull requests",
 	Description: `List, create, checkout and clean pull requests`,
 	Usage:       "List, create, checkout, close, clean and reopen pull requests",
 	Description: `List, create, checkout, close, clean and reopen pull requests`,

 func editPullState(ctx *cli.Context, opts gitea.EditPullRequestOption) error {
 	login, owner, repo := config.InitCommand(flags.GlobalRepoValue, flags.GlobalLoginValue, flags.GlobalRemoteValue)
 	if ctx.Args().Len() == 0 {
 		log.Fatal(ctx.Command.ArgsUsage)