libs: implement sceConvertKeycodeGetImeKeyboardType (#469)

* libs: implement sceConvertKeycodeGetImeKeyboardType

* fix: correct ConvertKeycode error codes

---------

Co-authored-by: nmzik <Nmzik@mail.ru>

src/libs/libConvertKeycode.cpp

@@ -0,0 +1,37 @@
+#include "common/abi.h"
+#include "common/logging/log.h"
+#include "libs/errno.h"
+#include "libs/libs.h"
+#include "loader/symbolDatabase.h"
+
+namespace Libs {
+
+LIB_VERSION("ConvertKeycode", 1, "ConvertKeycode", 1, 0);
+
+namespace ConvertKeycode {
+
+constexpr int CONVERT_KEYCODE_ERROR_INVALID_ADDRESS = -2135162831; // 0x80bc0031
+constexpr int CONVERT_KEYCODE_ERROR_INVALID_USER_ID = -2135162864; // 0x80bc0010
+
+static int KYTY_SYSV_ABI ConvertKeycodeGetImeKeyboardType(int32_t user_id, uint32_t* type) {
+	PRINT_NAME();
+
+	LOGF("\t user_id = %d\n", user_id);
+
+	if (type == nullptr) {
+		return CONVERT_KEYCODE_ERROR_INVALID_ADDRESS;
+	}
+	if (user_id < 0) {
+		return CONVERT_KEYCODE_ERROR_INVALID_USER_ID;
+	}
+	*type = 0;
+	return OK;
+}
+
+} // namespace ConvertKeycode
+
+LIB_DEFINE(InitConvertKeycode_1) {
+	LIB_FUNC("mUuUOWI-C+0", ConvertKeycode::ConvertKeycodeGetImeKeyboardType);
+}
+
+} // namespace Libs