Add Terra as an alternative Fedora install method

[Owen-sz]

PR Description

Adds Terra as an alternative Fedora install method. There are a few advantages to this method over the Copr:

• Auto-updates
• Not a sole repo just for lazygit
• Debug packages

Let me know if there are any formatting changes or anything else needed.

Please check if the PR fulfills these requirements

• Cheatsheets are up-to-date (run go generate ./...)
• Code has been formatted (see here)
• Tests have been added/updated (see here for the integration test guide)
• Text is internationalised (see here)
• If a new UserConfig entry was added, make sure it can be hot-reloaded (see here)
• Docs have been updated if necessary
• You've read through your own file changes for silly mistakes etc

[stefanhaller]

I have no experience with Fedora (or linux package management in general), so I can only trust you that this is good.

Just one question: in the lazygit spec on terrapkg I see Version: 0.59.0. This means that the file needs to be updated every time we make a new release, right? Would it be you who does that, and how committed are you to doing that?

[Owen-sz]

I have no experience with Fedora (or linux package management in general), so I can only trust you that this is good.

Just one question: in the lazygit spec on terrapkg I see Version: 0.59.0. This means that the file needs to be updated every time we make a new release, right? Would it be you who does that, and how committed are you to doing that?

Hey good question. Terra actually auto-updates, so whenever there's a new release, it'll get bumped typically within the hour. If the auto-update build fails, I or someone else will catch it and fix it.