[Keyboard] Add Caravan keyboard (#6630)

* added caravan keyboard

* updates per PR review

* updated bootmagic setting

* updated LAYOUT

* updated imgur url

keyboards/thevankeyboards/caravan/rules.mk

@@ -0,0 +1,28 @@
+# MCU name
+MCU = atmega32u4
+
+
+# Bootloader selection
+# Teensy       halfkay
+# Pro Micro    caterina
+# Atmel DFU    atmel-dfu
+# LUFA DFU     lufa-dfu
+# QMK DFU      qmk-dfu
+# atmega32a    bootloadHID
+BOOTLOADER = atmel-dfu
+
+
+# Build Options
+#   change yes to no to disable
+#
+BOOTMAGIC_ENABLE = lite      # Virtual DIP switch configuration(+1000)
+MOUSEKEY_ENABLE = no       # Mouse keys(+4700)
+EXTRAKEY_ENABLE = yes       # Audio control and System control(+450)
+CONSOLE_ENABLE = yes        # Console for debug(+400)
+COMMAND_ENABLE = no        # Commands for debug and configuration
+NKRO_ENABLE = yes           # USB Nkey Rollover
+BACKLIGHT_ENABLE = no       # Enable keyboard backlight functionality on B7 by default
+MIDI_ENABLE = no            # MIDI controls
+UNICODE_ENABLE = no         # Unicode
+BLUETOOTH_ENABLE = no       # Enable Bluetooth with the Adafruit EZ-Key HID
+AUDIO_ENABLE = no           # Audio output on port C6