Misc: setup, Helix, bash, packages, apps, font

- Setup: reorganize and add server specific setup
- Helix: use relative line numbers
- Bash: add aliases
- Packages: install GStreamer plugins for AV1 preview
- Apps: Video Trimmer
- Font: Simplified Chinese font priority fix

auto/bash/bash

@@ -19,6 +19,11 @@ PS1='${debian_chroot:+($debian_chroot)}\[\e[01;38;5;11m\]\u\[\e[00;38;5;208m\]@\
 PROMPT_DIRTRIM=3
 
 alias ls='ls --color'
+alias bat='batcat'
+alias mosh='mosh -o'
+alias cargo='cargo auditable'
+alias md='pulldown-cmark -TFSLH'
+alias auto-av1='nice ab-av1 auto-encode --min-samples 2 --keyint 2s --scd true'
 
 # Shows a oneline preview of all files under the folder after changing directory.