feat: build .deb and .rpm release files

[phm07]

This PR adds the following package files to releases:

• hcloud-cli-1.59.0-1.aarch64.rpm
• hcloud-cli-1.59.0-1.x86_64.rpm
• hcloud-cli_1.59.0_amd64.deb
• hcloud-cli_1.59.0_arm64.deb

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 72.56%. Comparing base (7756f5d) to head (42b93b6).
⚠️ Report is 7 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1311      +/-   ##
==========================================
+ Coverage   72.43%   72.56%   +0.12%     
==========================================
  Files         301      300       -1     
  Lines       11005    10986      -19     
==========================================
  Hits         7972     7972              
+ Misses       2144     2125      -19     
  Partials      889      889              

Flag	Coverage Δ
e2e	51.49% <ø> (ø)
unit	67.56% <ø> (+0.11%)	⬆️

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[phm07]

Some considerations:

• Right now goreleaser generates a lot of package files, because it generates one for each architecture. We might want to limit those, amd64 and arm64 would probably be enough. (We still offer direct binary downloads for all architectures anyway)
• Packages are not signed yet. This causes a problem on alpine for example: ERROR: hcloud-cli_1.59.0_x86_64.apk: UNTRUSTED signature. We'd need to create a key and provide it to users so they can install it

[phm07]

The manpage output (as well as the generated markdown docs) would have a way better table view if the tables are printed using markdown format. Our table renderer already supports this, we just need to find a way to switch between the pretty print and markdown. I used a custom config option for now but it doesn't seem to work, because viper is not loaded if you only generate docs/manpages. I'll have a look at this another time.

[apricote]

There is still something weird going on with the option table, the rows and columns are not consistent, see no-experimental-warnings and poll-interval

[apricote]

Looking good in general. Please document the new release artifacts for users. Should we mark them as experimental at first?

[phm07]

Docs have been updated now.

Should we mark them as experimental at first?

Maybe, but I'm not sure if this would be confusing with the way we use the experimental wording currently

[apricote]

I think the first paragraph from the experimental section applies here as well:

Experimental features are published as part of our regular releases (e.g. a product public beta). During an experimental phase, breaking changes on those features may occur within minor releases.