Add timestamps to position and behavior events (#147)

* Add timestamps to position events and behaviors.

- Take original event timestamps into consideration so nested tap-holds have proper timing.
- Add position and timestamp to keycode state changed event so the one-shot behavior can properly identify other keypresses and timings.
- Add timestamp to position events received from peripheral

* reduce number of arguments to behaviors

app/tests/hold-tap/balanced/many-nested/native_posix.keymap

@@ -0,0 +1,41 @@
+#include <dt-bindings/zmk/keys.h>
+#include <behaviors.dtsi>
+#include <dt-bindings/zmk/kscan-mock.h>
+
+/ {
+	behaviors {
+		ht_bal: behavior_hold_tap_balanced {
+			compatible = "zmk,behavior-hold-tap";
+			label = "HOLD_TAP_BALANCED";
+			#binding-cells = <2>;
+			flavor = "balanced";
+			tapping_term_ms = <300>;
+			bindings = <&kp>, <&kp>;
+		};
+	};
+
+	keymap {
+		compatible = "zmk,keymap";
+		label ="Default keymap";
+
+		default_layer {
+			bindings = <
+				&ht_bal LSFT F &ht_bal LCTL J 
+				&ht_bal LGUI H &ht_bal LALT L
+			>;
+		};
+	};
+};
+
+&kscan {
+	events = <
+	 	ZMK_MOCK_PRESS(0,0,100) 
+		ZMK_MOCK_PRESS(0,1,100) 
+		ZMK_MOCK_PRESS(1,0,100)
+		ZMK_MOCK_PRESS(1,1,100) 
+		ZMK_MOCK_RELEASE(0,0,100) 
+		ZMK_MOCK_RELEASE(0,1,100) 
+		ZMK_MOCK_RELEASE(1,0,100) 
+		ZMK_MOCK_RELEASE(1,1,100) 
+	>;
+};