Kernel improvements (#485)

* **New Features**
  * Added public accessors for querying module/device start and ready state.

* **Refactor**
  * Internal state moved to opaque internal objects; module/device/driver initializers now explicitly initialize internal pointers.
  * Lifecycle handling updated to construct/destruct internal state and use accessors.

* **Tests**
  * Tests updated to use public accessors and explicit construct/destruct lifecycle calls.

* **Chores**
  * Test build/include paths and small metadata updated.

Tests/TactilityKernel/Source/TimeAndDelay.cpp

@@ -0,0 +1,30 @@
+#include "doctest.h"
+#include <tactility/delay.h>
+#include <tactility/time.h>
+
+TEST_CASE("delay ticks should be accurate within 1 tick") {
+    auto start_time = get_ticks();
+    delay_ticks(100);
+    auto end_time = get_ticks();
+    auto difference = end_time - start_time;
+    CHECK_EQ(difference >= 100, true);
+    CHECK_EQ(difference <= 101, true);
+}
+
+TEST_CASE("delay millis should be accurate within 1 tick") {
+    auto start_time = get_millis();
+    delay_millis(100);
+    auto end_time = get_millis();
+    auto difference = end_time - start_time;
+    CHECK_EQ(difference >= 100, true);
+    CHECK_EQ(difference <= 101, true);
+}
+
+TEST_CASE("microsecond time should be accurate within 1 tick") {
+    auto start_time = get_micros_since_boot();
+    delay_millis(100);
+    auto end_time = get_micros_since_boot();
+    auto difference = (end_time - start_time) / 1000;
+    CHECK_EQ(difference >= 99, true);
+    CHECK_EQ(difference <= 101, true);
+}