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/infinity87/rev2/rules.mk

@@ -0,0 +1,19 @@
+# MCU name
+MCU = atmega32a
+
+# Processor frequency
+F_CPU = 16000000
+
+# Bootloader selection
+BOOTLOADER = USBasp
+
+# Build Options
+#   change yes to no to disable
+#
+CONSOLE_ENABLE = no
+COMMAND_ENABLE = no
+NKRO_ENABLE = no
+BACKLIGHT_ENABLE = yes
+CUSTOM_MATRIX = lite
+
+SRC += matrix.c