Add powermenu script and apply Tomorrow Night color theme

- Add scripts/powermenu.sh with logout, restart, sleep, shutdown options
- Create wofi/style.css with Tomorrow Night colors
- Apply Tomorrow Night theme to niri, waybar, mako, alacritty, and wofi

wofi/config

@@ -2,3 +2,4 @@ show=drun
 width=700
 height=450
 prompt=Run:
+style=/home/alex/Documents/dotfiles/wofi/style.css

wofi/style.css

@@ -0,0 +1,47 @@
+window {
+  background-color: #1d1f21;
+  border: 2px solid #373b41;
+  border-radius: 8px;
+  color: #c5c8c6;
+}
+
+#input {
+  background-color: #282a2e;
+  color: #c5c8c6;
+  border: 1px solid #373b41;
+  border-radius: 4px;
+  padding: 6px 10px;
+  margin: 8px;
+  outline: none;
+}
+
+#inner-box {
+  background-color: #1d1f21;
+}
+
+#outer-box {
+  padding: 4px;
+}
+
+#scroll {
+  margin: 0 4px 4px 4px;
+}
+
+#entry {
+  padding: 6px 10px;
+  border-radius: 4px;
+}
+
+#entry:selected {
+  background-color: #282a2e;
+  color: #81a2be;
+  outline: none;
+}
+
+#text {
+  color: #c5c8c6;
+}
+
+#text:selected {
+  color: #81a2be;
+}