[New keyboard]silverbullet44 (#7950)

* make silverbullet44

* comment edit

* venderID

* Fix parentheses in macros, and in general clean up quantum.h (#5021)

* Fix up GPIO macros

* Fix up send string macros

`string` arguments must not be parenthesized

* Fix up miscellaneous macros

* Make indentation uniform (4 spaces)

* Make #ifdef vs #if defined usage consistent

* Reorder standard includes

* Revert indentation changes as per review comments

* Revert #if defined(__AVR__) → #ifdef __AVR__ change

* Change 2 space indent to 4 spaces on a couple of lines

* Replace include guard with #pragma once

* alt+tab

* copy from master:silverbullet44

* adjust for pull request

* clang-format

* create info.json

* Delete new_project.sh

* Update keyboards/silverbullet44/keymaps/default/config.h

Co-Authored-By: Max Rumpf <max.rumpf1998@gmail.com>

* Update keyboards/silverbullet44/silverbullet44.c

Co-Authored-By: Max Rumpf <max.rumpf1998@gmail.com>

* Update keyboards/silverbullet44/silverbullet44.h

Co-Authored-By: Max Rumpf <max.rumpf1998@gmail.com>

* Apply suggestions from Maxr1998

* format default keymap

* Apply suggestions from Maxr1998 (#2)

* Apply suggestions from fauxpark

* fix readme.md

* Apply suggestion from Maxr1998. (custom_keycode to MO(_ADJUST))

* I became a tricky! Hahaha!!

* Add original keymap made by FKML

* deleated at config.h

* Changed Copyright

* Delete
// Defines the keycodes used by our macros in process_record_user
//enum custom_keycodes {
//  QMKBEST = SAFE_RANGE,
//  QMKURL
//};

* Delete bool alt_pressed = false;

* Delete ADJUST

* Delete /

* Delete void matrix_scan_user(void) {

}

void led_set_user(uint8_t usb_led) {

}

* Change Copyright's year.

* Delete adjust

* Delete adjust

* Delete adjust

* 列挙型に変更

* Enclose  keymap with ```.

* Delete
#define _______ KC_TRNS
#define XXXXXXX KC_NO

* Fix indentation.

* Delete some rows.

* Aligned columns of ''readme.md''.

* I got god's keymap...hahaha:)

* Update keyboards/silverbullet44/readme.md

Co-Authored-By: fauxpark <fauxpark@gmail.com>

* Update keyboards/silverbullet44/rules.mk

Co-Authored-By: fauxpark <fauxpark@gmail.com>

Co-authored-by: Konstantin Đorđević <vomindoraan@gmail.com>
Co-authored-by: Max Rumpf <max.rumpf1998@gmail.com>
Co-authored-by: Ryan <fauxpark@gmail.com>

keyboards/silverbullet44/rules.mk

@@ -0,0 +1,36 @@
+# 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
+#   ATmega328P   USBasp
+BOOTLOADER = caterina
+
+# Build Options
+#   change yes to no to disable
+#
+BOOTMAGIC_ENABLE = lite     # Virtual DIP switch configuration
+MOUSEKEY_ENABLE = no        # Mouse keys
+EXTRAKEY_ENABLE = no        # Audio control and System control
+CONSOLE_ENABLE = no         # Console for debug
+COMMAND_ENABLE = no         # Commands for debug and configuration
+# Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
+SLEEP_LED_ENABLE = no       # Breathing sleep LED during USB suspend
+# if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
+NKRO_ENABLE = no            # USB Nkey Rollover
+BACKLIGHT_ENABLE = no       # Enable keyboard backlight functionality on B7 by default
+RGBLIGHT_ENABLE = yes       # Enable keyboard RGB underglow
+#RGB_MATRIX_ENABLE = WS2812
+MIDI_ENABLE = no            # MIDI support
+UNICODE_ENABLE = no         # Unicode
+BLUETOOTH_ENABLE = no       # Enable Bluetooth with the Adafruit EZ-Key HID
+AUDIO_ENABLE = yes          # Audio output on port B6
+FAUXCLICKY_ENABLE = no      # Use buzzer to emulate clicky switches
+HD44780_ENABLE = no         # Enable support for HD44780 based LCDs
+SPLIT_KEYBOARD = yes
+LTO_ENABLE = yes