Merge pull request #898 from Quency-D/heltec-v4-r8

add heltec-v4-r8 board

Author: thebentern

meshtastic/mesh.proto

@@ -888,6 +888,11 @@ enum HardwareModel {
   THINKNODE_M8 = 130;
   THINKNODE_M9 = 131;
 
+  /*
+   * The Heltec-V4-R8 uses an ESP32S3R8 chip, plus an SX1262.
+   */
+  HELTEC_V4_R8 = 132;
+
   /*
    * ------------------------------------------------------------------------------------------------------------------------------------------
    * Reserved ID For developing private Ports. These will show up in live traffic sparsely, so we can use a high number. Keep it within 8 bits.