build: use PCH to reduce compile time (#3095)

src/pch/pch.hpp

@@ -0,0 +1,29 @@
+#include "Compositor.hpp"
+
+#include <algorithm>
+#include <any>
+#include <array>
+#include <chrono>
+#include <concepts>
+#include <deque>
+#include <filesystem>
+#include <fstream>
+#include <functional>
+#include <iomanip>
+#include <iostream>
+#include <iterator>
+#include <list>
+#include <map>
+#include <memory>
+#include <mutex>
+#include <optional>
+#include <random>
+#include <ranges>
+#include <regex>
+#include <set>
+#include <sstream>
+#include <string>
+#include <thread>
+#include <tuple>
+#include <unordered_map>
+#include <vector>