[Keyboard] add bt66tech60 handwired (#10867)

* Add files via upload

add handwired bt66tech keyboard

* Update info.json

* Update rules.mk

* Update info.json

* Update config.h

change #define DESCRIPTION

* Update bt66tech60.c

remove #include "bt66tech.h"

* Update config.h

remove #define DESCRIPTION A handwired 60% keyboard.

* Update keymap.c

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

* Update readme.md

fill description

* Update rules.mk

apply suggestion

* Update keymap.c

remove bool process_record_user(uint16_t keycode, keyrecord_t *record) .....

* Update keymap.c

remove enter inline 25

* Update readme.md

remove *

* Update bt66tech60.c

remove all and add #include "bt66tech60.h"

* Update keymap.c

* Update rules.mk

remove enter

* Update info.json

chenge LAYOUT to LAYOUT_60_ansi

* Update readme.md

* Update rules.mk

add LAYOUTS = 60_ansi

* Update rules.mk

when add LAYOUTS = 60_ansi the pullrequest check say error so i'm remove it

* Update rules.mk

add LAYOUTS = 60_ansi

* Update rules.mk

keyboards/bt66tech/bt66tech60/rules.mk

@@ -0,0 +1,30 @@
+# MCU name
+MCU = STM32F103
+
+# Bootloader selection
+BOOTLOADER = stm32duino
+
+# Build Options
+#   change yes to no to disable
+#
+BOOTMAGIC_ENABLE = no       # Virtual DIP switch configuration
+MOUSEKEY_ENABLE = yes       # Mouse keys
+EXTRAKEY_ENABLE = yes       # Audio control and System control
+CONSOLE_ENABLE = yes        # Console for debug
+COMMAND_ENABLE = yes        # Commands for debug and configuration
+# Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
+SLEEP_LED_ENABLE = yes      # 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 = yes           # USB Nkey Rollover
+BACKLIGHT_ENABLE = yes      # Enable keyboard backlight functionality
+RGBLIGHT_ENABLE = yes       # Enable keyboard RGB underglow
+BLUETOOTH_ENABLE = no       # Enable Bluetooth
+AUDIO_ENABLE = no           # Audio output
+WS2812_DRIVER = spi
+
+DEFAULT_FOLDER = bt66tech/bt66tech60
+
+LAYOUTS = 60_ansi
+
+# Enter lower-power sleep mode when on the ChibiOS idle thread
+OPT_DEFS += -DCORTEX_ENABLE_WFI_IDLE=TRUE