Add switch keymap USB command.

right/src/usb_commands/usb_command_switch_keymap.h

@@ -0,0 +1,15 @@
+#ifndef __USB_COMMAND_SWITCH_KEYMAP_H__
+#define __USB_COMMAND_SWITCH_KEYMAP_H__
+
+// Functions:
+
+    void UsbCommand_SwitchKeymap(void);
+
+// Typedefs:
+
+    typedef enum {
+        UsbStatusCode_SwitchKeymap_InvalidAbbreviationLength = 2,
+        UsbStatusCode_SwitchKeymap_InvalidAbbreviation = 3,
+    } usb_status_code_switch_keymap_t;
+
+#endif