Refactors site to use interactive terminal UI

Moves site from static HTML to a dynamic terminal interface.

This commit represents a major overhaul, introducing:
- A functional terminal emulator implemented in JavaScript.
- Command parsing and execution framework.
- Various terminal commands for navigation and utility functions.
- SASS conversion.

The old CSS and simple HTML are completely removed. A new Hugo theme is implemented.

assets/sass/partials/_now-playing.scss

@@ -0,0 +1,28 @@
+.nowplayingcard {
+  margin: auto;
+}
+
+.nowplayingcontainer-inner {
+  transition: 0.3s;
+  display: inline-flex;
+
+  .trackInfo {
+    width: 100%;
+  }
+
+  #album {
+    display: none;
+  }
+}
+
+img#trackart {
+  transition: 0.3s;
+  width: 100%;
+  height: 100%;
+  object-fit: cover;
+  filter: grayscale(60%);
+}
+
+img#trackart[src=""] {
+  display: none;
+}