[Keyboard] add kinesis/kintlc (#17301)

keyboards/kinesis/kintlc/rules.mk

@@ -0,0 +1,9 @@
+# MCU name
+MCU = MKL26Z64
+# This MCU is not in the main CHIBIOS repo but in the CHIBIOS_CONTRIB repo.
+USE_CHIBIOS_CONTRIB = yes
+
+# Debounce eagerly (report change immediately), keep per-key timers. We can use
+# this because the Cherry MX keyswitches on the Kinesis only produce noise while
+# pressed.
+DEBOUNCE_TYPE = sym_eager_pk