Add Text rendering

- Add FreeType as dependency
- Add MsdfGen as dependency
- Add MsdfAtlasGen as dependency

CopiumEngine/ext/include/msdf-atlas-gen/Workload.h

@@ -0,0 +1,32 @@
+
+#pragma once
+
+#include <functional>
+
+namespace msdf_atlas {
+
+/**
+ * This function allows to split a workload into multiple threads.
+ * The worker function:
+ *     bool FN(int chunk, int threadNo);
+ * should process the given chunk (out of chunks) and return true.
+ * If false is returned, the process is interrupted.
+ */
+class Workload {
+
+public:
+    Workload();
+    Workload(const std::function<bool(int, int)> &workerFunction, int chunks);
+    /// Runs the process and returns true if all chunks have been processed
+    bool finish(int threadCount);
+
+private:
+    std::function<bool(int, int)> workerFunction;
+    int chunks;
+
+    bool finishSequential();
+    bool finishParallel(int threadCount);
+
+};
+
+}