feat(shell): add gf and gfp aliases

shell/shell_aliases.nix

@@ -6,6 +6,8 @@
     gg = "git graph --all --max-count 32";
     gs = "git status";
     gd = "git diff";
+    gf = "git fetch";
+    gfp = "git fetch --prune";
     k = "kubectl";
     ww = "nvim -c VimwikiIndex";
   };