Display Percentage on Installing & Extracting.

Also add progressbar for Installing & convert `cia.c` to `cia.cpp` for `new`.

include/animation.hpp

@@ -35,6 +35,8 @@ namespace Animation {
 	void DrawProgressBar(float currentProgress, float totalProgress, int mode);
 	// Extracting progressbar.
 	void DrawProgressBarExtract(u64 currentProgress, u64 totalProgress, int mode);
+	// Installing progressbar.
+	void DrawProgressBarInstall(u64 currentProgress, u64 totalProgress, int mode);
 	// Draw Button.
 	void Button(int x, int y, float speed = .030);
 }