feat: ✨ improve install script and add unistall script

install.fish

@@ -1,6 +1,12 @@
 #!/bin/fish
+
 cp ./src/snap-pac-uki.fish /usr/local/bin/snap-pac-uki
-echo "installed creation script."
+echo "installed script."
+
+if not test -d "/etc/snap-pac-uki"
+    mkdir -p "/etc/snap-pac-uki"
+    echo "created config dir."
+end
 
 cp ./src/config.fish /etc/snap-pac-uki/config.fish
 echo "installed config script."

uninstall.fish

@@ -0,0 +1,17 @@
+#!/bin/fish
+
+rm /usr/local/bin/snap-pac-uki
+echo "removed script."
+
+rm /etc/snap-pac-uki/config.fish
+echo "removed config script."
+
+for name in (ls ./pacman)
+    rm /usr/share/libalpm/hooks/$name
+end
+echo "removed pacman hooks."
+
+for name in (ls ./systemd)
+    rm /etc/systemd/system/$name
+end
+echo "removed systemd unit files"