[Keyboard] Add rb87 (#19546)

keyboards/ryanbaekr/rb1/info.json

@@ -3,6 +3,8 @@
     "manufacturer": "ryanbaekr",
     "url": "",
     "maintainer": "ryanbaekr",
+    "processor": "atmega32u4",
+    "bootloader": "caterina",
     "usb": {
         "vid": "0x7262",
         "pid": "0x0001",

keyboards/ryanbaekr/rb1/keymaps/default/readme.md

@@ -1 +0,0 @@
-# The default keymap for rb1

keyboards/ryanbaekr/rb1/readme.md

@@ -10,6 +10,10 @@ Make example for this keyboard (after setting up your build environment):
 
     make ryanbaekr/rb1:default
 
+Flashing example for this keyboard:
+
+    make ryanbaekr/rb1:default:flash
+
 To boot into the bootloader, hold the reset button on the SparkFun Qwiic Pro Micro - USB-C on plug in
 
 See the [build environment setup](https://docs.qmk.fm/#/getting_started_build_tools) and the [make instructions](https://docs.qmk.fm/#/getting_started_make_guide) for more information. Brand new to QMK? Start with our [Complete Newbs Guide](https://docs.qmk.fm/#/newbs).

keyboards/ryanbaekr/rb1/rules.mk

@@ -1,9 +1,3 @@
-# MCU name
-MCU = atmega32u4
-
-# Bootloader selection
-BOOTLOADER = caterina
-
 # Build Options
 #   change yes to no to disable
 #