Put CA66 and PK60 under a playkbtw directory (#3102)

* Add playkbtw directory to put ca66 and pk60 in

* delete old references

* edit readmes for links

keyboards/playkbtw/pk60/pk60.c

@@ -0,0 +1,35 @@
+#include "pk60.h"
+#include "led.h"
+
+void matrix_init_kb (void) {
+
+  matrix_init_user();
+  led_init_ports();
+
+}
+
+void matrix_scan_kb(void) {
+
+  matrix_scan_user();
+
+};
+
+void led_init_ports(void) {
+  // Set capslock LED pin as pinout
+  DDRF |= (1 << 4);
+  PORTF |= (1 << 4);
+
+}
+
+void led_set_kb(uint8_t usb_led) {
+    
+  if (usb_led & (1<<USB_LED_CAPS_LOCK)) {
+      // Turn capslock on
+      PORTF &= ~(1 << 4);
+  } else {
+      // Turn capslock off
+      PORTF |= (1 << 4);
+  }
+  led_set_user(usb_led);
+
+}