✨ Add irq constants

These constants can make it easier to ensure that the correct interrupt
handler was set to the correct interrupt handler.

conanfile.py

@@ -26,7 +26,7 @@
 
 class libhal_arm_cortex_conan(ConanFile):
     name = "libhal-armcortex"
-    version = "2.0.3"
+    version = "2.1.0"
     license = "Apache-2.0"
     url = "https://github.com/conan-io/conan-center-index"
     homepage = "https://libhal.github.io/libhal-armcortex"

include/libhal-armcortex/interrupt.hpp

@@ -24,6 +24,26 @@ namespace hal::cortex_m {
 /// Used specifically for defining an interrupt vector table of addresses.
 using interrupt_pointer = void (*)();
 
+enum class irq
+{
+  top_of_stack = 0,
+  reset = 1,
+  non_maskable hard_fault = 2,
+  hard_fault = 3,
+  memory_management_fault = 4,
+  bus_fault = 5,
+  usage_fault = 6,
+  reserve7 = 7,
+  reserve8 = 8,
+  reserve9 = 9,
+  reserve10 = 10,
+  sv_call = 11,
+  reserve12 = 12,
+  reserve13 = 13,
+  pend_sv = 14,
+  systick = 15,
+};
+
 /**
  * @brief Cortex M series interrupt controller
  *