Biome colour and grass side tint options (#98)

* Added biome colour and grass side tint options

* Moved GrassColor and FoliageColor to client/renderer/

* * Fix some build issues.

* * Add the new files to the CMakeLists.txt

---------

Co-authored-by: iProgramInCpp <iprogramincpp@gmail.com>

source/client/renderer/FoliageColor.cpp

@@ -0,0 +1,37 @@
+#include "FoliageColor.hpp"
+
+// TODO: This should be inside of an initialized "Minecraft" instance rather than the global namespace
+bool g_bIsFoliageColorAvailable = false;
+
+Texture FoliageColor::texture;
+
+bool FoliageColor::isAvailable()
+{
+	return g_bIsFoliageColorAvailable;
+}
+
+void FoliageColor::init(Texture texture)
+{
+	FoliageColor::texture = texture;
+}
+
+uint32_t FoliageColor::get(double x, double y)
+{
+	y *= x;
+	return FoliageColor::texture.m_pixels[(int)((1.0 - y) * 255.0) << 8 | (int)((1.0 - x) * 255.0)];
+}
+
+uint32_t FoliageColor::getEvergreenColor()
+{
+	return 0x619961;
+}
+
+uint32_t FoliageColor::getBirchColor()
+{
+	return 0x55A780;
+}
+
+uint32_t FoliageColor::getDefaultColor()
+{
+	return 0x18B548;
+}