Extend Nerd Fonts icon coverage on more remotes and file extensions

[hasecilu]

As noted in the CONTRIBUTING file I open this issue before doing any change.

Is your feature request related to a problem? Please describe.

• I'm always frustrated when I'm on the remote branches tab and the icon used is a square for remotes that are not included.
  •  Arch Linux (https://gitlab.archlinux.org): Hosting their tools, mirrors, etc. Merge requests and Issues will be open to users in the foreseeable future.
  •  freedesktop.org (https://gitlab.freedesktop.org): Software focused on interoperability and shared technology for open-source graphical and desktop systems.
  •  GNOME (https://gitlab.gnome.org): Software from GNOME project.
  •  Codeberg (https://codeberg.org): Collaboration platform providing Git hosting and services for free and open source software, content and projects. .
  •  Debian (https://salsa.debian.org) Repository of Debian.
  •  FreeBSD (https://cgit.freebsd.org): FreeBSD project.
  •  GNU (https://www.gnu.org): GNU packages.
  •  KDE (https://invent.kde.org): Software from GNOME project.
  •  Linux (https://kernel.org/): The Linux kernel projects.
  •  sourcehut (https://sr.ht), independent git hosting site.
• I'm always frustrated when some file extensions don't have an associated icon.

Describe the solution you'd like

• Add various popular remotes to Lazygit, previous list would be nice =)
• Associate more icons to popular file extensions.

Describe alternatives you've considered

• The first option is to incorporate all these changes in the code
• Another option is to create a config file that enables the user to add custom pairs of remotes url/file extensions and icons via config file.

Additional context

• I have no Go experience but reading the code I can figure it out how to make the changes to add icons but not how to implement feature via config file.
• Please, see the example of powerlevel10k for the remotes and the example of eza for the file extensions I'm interested on font-logos used in the wild lukas-w/font-logos#130

Extra comment

In the previous version the color for unstaged files covered status, icon and filename but now with recent update filenames seems to use default foreground color, the icons are colored even if they are not staged, leaving only the status with the "unstaged color". I think would be better to make all use the unstaged color as before and only change the icon color when the files is (partially) staged. Otherwise I think they distract a little.

I would love to have this changes on lazygit, do you think that are a good adition? If so to start on this unless you have some plans, would love to know.