Add flashing functions to .kaleidoscope-builder.conf

Signed-off-by: Gergely Nagy <algernon@keyboard.io>

.kaleidoscope-builder.conf

@@ -1,2 +1,24 @@
+flash_over_usb() {
+    sleep 1s
+
+    echo "Please reset your keyboard!"
+    teensy_loader_cli --mcu "${MCU}" -w "${HEX_FILE_PATH}"
+}
+
+flash () {
+    prepare_to_flash
+
+    # This is defined in the (optional) user config.
+    # shellcheck disable=SC2154
+    ${preFlash_HOOKS}
+
+    flash_over_usb || flash_over_usb
+
+    # This is defined in the (optional) user config.
+    # shellcheck disable=SC2154
+    ${postFlash_HOOKS}
+}
+
+NO_RESET=1
 DEFAULT_SKETCH="ErgoDox"
 BOARD="ergodox"