fish: Add helpers for easing work with gdb

fish/.config/fish/config.fish

@@ -340,6 +340,19 @@ function dotg --description "Generate gstreamer dot graph for selected file"
   mv "$result".svg ~/Pictures/gstreamer
 end
 
+function gdba --description "Attach to a process"
+  gdb attach -p (ps -e | fzf | awk '{print $1}' | head -1)
+end
+
+function gdbp --description "Attach to a python process"
+  gdb python3 (ps -e | fzf | awk '{print $1}' | head -1)
+end
+
+function pst --description "Show process tree of a process"
+  set proc (ps -e | fzf | awk '{print $1}' | head -1)
+  pstree -H $proc $proc
+end
+
 fzf_key_bindings
 
 starship init fish | source