Keyboard functionality

Co-authored-by: sigonasr2 <sigonasr2@gmail.com>

main.cpp

@@ -96,7 +96,10 @@ public:
 		return true;
 	}
 
-	void GetAnyKeyPress(olc::Key pressed)override{
+	void GetAnyKeyPress(olc::Key k)override{
+		if (k>=A&&k<=Z){
+			document[cursors[0].line].insert(cursors[0].pos,std::string(1,Z-k));
+		}
 	}
 };