Add TH1800 PCB, Hex6C PCB, Rogue87 PCB, Rouge87 PCB, Infinity87 series (#11977)

Co-authored-by: Drashna Jaelre <drashna@live.com>
Co-authored-by: Ryan <fauxpark@gmail.com>
Co-authored-by: Erovia <Erovia@users.noreply.github.com>
Co-authored-by: vuhopkep <boy9x0@gmail.com>

keyboards/mechlovin/th1800/config.h

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+/*
+Copyright 2020 Team Mechlovin
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#pragma once
+
+#include "config_common.h"
+
+/* USB Device descriptor parameter */
+#define VENDOR_ID    0x4D4C // ML-Mechlovin
+#define PRODUCT_ID   0x1800
+#define DEVICE_VER   0x0001
+#define MANUFACTURER Team Mechlovin
+#define PRODUCT      th1800
+
+/* key matrix size */
+#define MATRIX_ROWS 6
+#define MATRIX_COLS 18
+
+/*
+ * Keyboard Matrix Assignments
+ *
+ * Change this to how you wired your keyboard
+ * COLS: AVR pins used for columns, left to right
+ * ROWS: AVR pins used for rows, top to bottom
+ * DIODE_DIRECTION: COL2ROW = COL = Anode (+), ROW = Cathode (-, marked on diode)
+ *                  ROW2COL = ROW = Anode (+), COL = Cathode (-, marked on diode)
+ *
+ */
+#define MATRIX_ROW_PINS { B6, B7, D0, D1, D5, D6 }
+#define MATRIX_COL_PINS { A3, D7, C0, C1, C2, C3, C4, C5, C6, C7, A7, A6, A5, A4, B3, B2, B0, B1 }
+#define UNUSED_PINS
+
+/* COL2ROW, ROW2COL */
+#define DIODE_DIRECTION COL2ROW
+
+#define LED_NUM_LOCK_PIN A2
+#define LED_CAPS_LOCK_PIN A0
+#define LED_SCROLL_LOCK_PIN A1
+#define LED_PIN_ON_STATE 0