Devicetree DTS alias support (#483)

* **New Features**
  * Phandle support for device-to-device property references.
  * Recognition of #define-style declarations in device trees.
  * Device nodes may include optional aliases alongside node names.

* **Improvements**
  * Flatter, consistent device hierarchy processing for generation.
  * Error and log messages now reference node names for clearer diagnostics.

* **Other**
  * Added a static ESP32-based device tree and minor DTS comment updates.

Buildscripts/DevicetreeCompiler/source/grammar.lark

@@ -21,6 +21,7 @@ BOOLEAN: "true" | "false"
 // Main
 
 INCLUDE_C: /#include <[\w\/.\-]+>/
+DEFINE_C: /#define[^\n]+/
 
 PROPERTY_NAME: /#?[a-zA-Z0-9_\-,]+/
 
@@ -29,20 +30,21 @@ QUOTED_TEXT: QUOTE /[^"]+/ QUOTE
 quoted_text_array: QUOTED_TEXT ("," " "* QUOTED_TEXT)+
 HEX_NUMBER: "0x" HEXDIGIT+
 NUMBER: SIGNED_NUMBER | HEX_NUMBER
-PHANDLE: /&[0-9a-zA-Z\-]+/
+PHANDLE: /&[0-9a-zA-Z_\-]+/
 C_VARIABLE: /[0-9a-zA-Z_]+/
 VALUE: NUMBER | PHANDLE | C_VARIABLE
 value: VALUE
 values: VALUE+
 array: NUMBER+
 
-property_value: quoted_text_array | QUOTED_TEXT | "<" value ">" | "<" values ">" | "[" array "]"
+property_value: quoted_text_array | QUOTED_TEXT | "<" value ">" | "<" values ">" | "[" array "]" | PHANDLE
 device_property: PROPERTY_NAME ["=" property_value] ";"
 
-DEVICE_IDENTIFIER: /[a-zA-Z0-9_\-\/@]+/
+NODE_ALIAS: /[a-zA-Z0-9_\-\/@]+/
+NODE_NAME: /[a-zA-Z0-9_\-\/@]+/
 
-device: DEVICE_IDENTIFIER "{" (device | device_property)* "};"
+device: (NODE_ALIAS ":")? NODE_NAME "{" (device | device_property)* "};"
 
 dts_version: /[0-9a-zA-Z\-]+/
 
-start: "/" dts_version "/;" INCLUDE_C* device+
+start: "/" dts_version "/;" (INCLUDE_C | DEFINE_C)* device+