consolidated script documentation into a single md file

wrote documentation on terminal sound effects

added a sound effect for `invoke`

added the function `build-drv`, which is a wrapper for nix-build that
puts the output nix store path to the derivation into an environment
variable instead of symlinking it in the current working directory

modules/home/environment/zsh/env.nix

@@ -7,7 +7,7 @@
   config = lib.mkIf config.movOpts.envConfig.zshConfig.envVariables.enable {
     programs.zsh = {
       sessionVariables = {
-        SOUNDS_ENABLED = "1";
+        SOUNDS_ENABLED = "true";
         EDITOR = "nvim";
         SUDO_EDITOR = "nvim";
         VISUAL = "nvim";