Add Swoop keyboard (#18436)

keyboards/bluebell/swoop/keymaps/kyek/rules.mk

@@ -0,0 +1,15 @@
+# Enables Link Time Optimization (LTO) when compiling the keyboard. This makes the process take longer,
+# but it can significantly reduce the compiled size (and since the firmware is small, the added time is not noticeable).
+LTO_ENABLE = no
+
+# Audio control and System control
+EXTRAKEY_ENABLE = no
+
+# ENCODER_ENABLE = no
+# OLED_DRIVER_ENABLE = no
+# WPM_ENABLE = no
+
+# Enable keyboard underlight functionality
+RGBLIGHT_ENABLE = yes
+
+COMBO_ENABLE = yes