Clean termbox2 usage + fix animation bug

Signed-off-by: AnErrupTion <anerruption@disroot.org>

src/animations/Dummy.zig

@@ -0,0 +1,14 @@
+const std = @import("std");
+const Animation = @import("../tui/Animation.zig");
+
+const Dummy = @This();
+
+pub fn animation(self: *Dummy) Animation {
+    return Animation.init(self, deinit, realloc, draw);
+}
+
+fn deinit(_: *Dummy) void {}
+
+fn realloc(_: *Dummy) anyerror!void {}
+
+fn draw(_: *Dummy) void {}