Added zsh completion script

_nicole.compdef.zsh

@@ -0,0 +1,30 @@
+#compdef nicole
+# https://zsh.sourceforge.io/Doc/Release/Completion-System.html#Completion-Functions
+_lyrics-site()
+{
+    _values "lyrics site" \
+        'genius[use only genius.com]' \
+        'azlyrics[use only azlyrics.com]' \
+        'all[use all supported sites (default)]'
+}
+
+_nicole()
+{
+    # each argument is
+    # n:message:action
+    # option[description]:message:action
+    # # -s allow stacking, eg -inr
+    _arguments -s \
+        '-d[process directory]':directory:_directories \
+        '-f[process file]':file:_files \
+        '-r[go through directories recursively]' \
+        '-s[silent]' \
+        '-i[ignore history]' \
+        '-n[do not write to history]' \
+        '-o[overwrite if the file already has lyrics]' \
+        '-t[test, only print lyrics, dont write to tags]' \
+        '-h[show this]' \
+        '--rm_explicit[remove the "Explicit" lyrics warning from the title tag]' \
+        '--site[specify lyrics site]':lyrics-site:_lyrics-site
+}
+_nicole "$@"