Refactor Native Messages (#4738)

* refactor: move ipc queue into its own class

* refactor: move windows.h related functions to AW

* refactor: make NM-Client methods static

* refactor: json access

* refactor: use struct initializer

* refactor: move `handleMessage` to anon-namespace

* refactor: clean-up includes

* refactor: move action handler to functions

* refactor: cleanup `handleSelect`

* fix: cleanup clang-tidy warnings

* chore: simplify json

* revert: keep handlers as methods

This is more readable and extensible.

* fix: typo

* fix: namespace

* fix: rename define

* refactor: `IpcQueue` to be simpler

* fix: rename cmake option

* fix: use variant when constructing

* fix: make it a ref

* fix: its a pair now

src/util/IpcQueue.hpp

@@ -0,0 +1,35 @@
+#pragma once
+
+#include <memory>
+#include <utility>
+
+class QByteArray;
+class QString;
+
+namespace chatterino::ipc {
+
+void sendMessage(const char *name, const QByteArray &data);
+
+class IpcQueuePrivate;
+class IpcQueue
+{
+public:
+    ~IpcQueue();
+
+    static std::pair<std::unique_ptr<IpcQueue>, QString> tryReplaceOrCreate(
+        const char *name, size_t maxMessages, size_t maxMessageSize);
+
+    // TODO: use std::expected
+    /// Try to receive a message.
+    /// In the case of an error, the buffer is empty.
+    QByteArray receive();
+
+private:
+    IpcQueue(IpcQueuePrivate *priv);
+
+    std::unique_ptr<IpcQueuePrivate> private_;
+
+    friend class IpcQueuePrivate;
+};
+
+}  // namespace chatterino::ipc