pkgctl auth: add manpages & small improvements

Adds manpages to pkgctl auth, pkgctl auth status and pkgctl auth login.

adds a warning if the token is stored in a (plaintext) file.

Closes #128 (closed)

added 2 commits

• d861a977 - pkgctl auth: add manpages
• 1f799c1c - pkgctl auth {login,status}: inform user about DEVTOOLS_GITLAB_TOKEN

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added 26 commits

• 1f799c1c...62b635f4 - 23 commits from branch archlinux:git-packages
• 00f767d7 - pkgctl auth: add manpages
• 37a51795 - pkgctl auth {login,status}: inform user about DEVTOOLS_GITLAB_TOKEN
• 70ec2d37 - pkgctl repo login: prefill the access token web view

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resolved all threads

I have now implemented your feedback and also added another commit that does prefilling upon --gen-access-token/-g with the minimum scopes (api & write_repository).

changed title from pkgctl auth: add manpages to pkgctl auth: add manpages & small improvements

Some small nits, otherwise thank you very much helping out here

resolved all threads

added 3 commits

• 26600134 - pkgctl auth: add manpages
• 4a625b4d - pkgctl auth {login,status}: inform user about DEVTOOLS_GITLAB_TOKEN
• 278e4c60 - pkgctl repo login: prefill the access token web view

Compare with previous version

Always happy to help, sorry for the obvious mistakes & thanks for the patient feedback!