[Keyboard] added custom keyboard (#6141)

* added keyboard_layout_jopr

* making it compile

* #pragma once instead of #ifndef and #define

* renamed and added keymap

renamed old "default" to "modded_white", added new "default" that resembles an ISO 105-key layout

* reordered keyboards/jopr/info.json to match order o layout array

* implemented most suggestions

* fixed missing ;

* fixed bootloader setting for rules.mk

* adopted standard layout matrix naming convention

* "fixed" commented-out code in keymaps

* changes to keymap layers and LEDs

Turns out adding a layer for ROYA-modified keycodes is more trouble than it's worth and works better by just defining a ROYA key.
Also, LEDs were set up incorrectly.
Lastly, implemented SysReq-Warning LED.

* moved forced NumLock code

just in case either it or the CapsLock & ScrlLock update code wouldn't both work otherwise

* rearranged media keycodes

* replaced Shifted keycodes with basic ones

* Apply suggestions from code review

Co-Authored-By: noroadsleft <18669334+noroadsleft@users.noreply.github.com>

* implemented suggestions by noroadsleft

* Apply suggestions from code review

Make ISO-Enter QMK Configurator-friendly

Co-Authored-By: noroadsleft <18669334+noroadsleft@users.noreply.github.com>

* Update readme.md

* Update keyboards/jopr/info.json

Co-Authored-By: noroadsleft <18669334+noroadsleft@users.noreply.github.com>

* moved keyboard to handwired folder

It was said that personal passion projects belong in there, even if they're not actually handwired

* Update readme.md

keyboards/handwired/jopr/rules.mk

@@ -0,0 +1,63 @@
+# MCU name
+MCU = atmega32u4
+
+# Processor frequency.
+#     This will define a symbol, F_CPU, in all source code files equal to the
+#     processor frequency in Hz. You can then use this symbol in your source code to
+#     calculate timings. Do NOT tack on a 'UL' at the end, this will be done
+#     automatically to create a 32-bit value in your source code.
+#
+#     This will be an integer division of F_USB below, as it is sourced by
+#     F_USB after it has run through any CPU prescalers. Note that this value
+#     does not *change* the processor frequency - it should merely be updated to
+#     reflect the processor speed set externally so that the code can use accurate
+#     software delays.
+F_CPU = 16000000
+
+#
+# LUFA specific
+#
+# Target architecture (see library "Board Types" documentation).
+ARCH = AVR8
+
+# Input clock frequency.
+#     This will define a symbol, F_USB, in all source code files equal to the
+#     input clock frequency (before any prescaling is performed) in Hz. This value may
+#     differ from F_CPU if prescaling is used on the latter, and is required as the
+#     raw input clock is fed directly to the PLL sections of the AVR for high speed
+#     clock generation for the USB and other AVR subsections. Do NOT tack on a 'UL'
+#     at the end, this will be done automatically to create a 32-bit value in your
+#     source code.
+#
+#     If no clock division is performed on the input clock inside the AVR (via the
+#     CPU clock adjust registers or the clock division fuses), this will be equal to F_CPU.
+F_USB = $(F_CPU)
+
+# Interrupt driven control endpoint task(+60)
+OPT_DEFS += -DINTERRUPT_CONTROL_ENDPOINT
+
+
+# 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
+#   comment out to disable the options.
+#
+BOOTMAGIC_ENABLE = no	# Virtual DIP switch configuration(+1000)
+MOUSEKEY_ENABLE = no	# Mouse keys(+4700)
+EXTRAKEY_ENABLE = yes	# Audio control and System control(+450)
+CONSOLE_ENABLE = no	# Console for debug(+400)
+COMMAND_ENABLE = no    # Commands for debug and configuration
+SLEEP_LED_ENABLE = no  # Breathing sleep LED during USB suspend
+NKRO_ENABLE = yes	# USB Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
+BACKLIGHT_ENABLE = no  # Enable keyboard backlight functionality
+AUDIO_ENABLE = no
+UNICODE_ENABLE = yes
+RGBLIGHT_ENABLE = no