Generate device path nodes for uefi-raw

These nodes are very similar to the nodes generated in the `uefi` crate. The
main difference is in DST nodes: instead of creating a trailing DST slice, a
zero-length array is created instead. This ensures that pointers are thin, and
matches the API style used elsewhere in `uefi-raw`.

Author: nicholasbishop

uefi-raw/CHANGELOG.md

@@ -3,6 +3,7 @@
 ## Added
 
 - Added `DeviceType` and `DeviceSubType` enums.
+- Added device path node types in the `protocol::device_path` module.
 
 
 # uefi-raw - 0.8.0 (2024-09-09)

uefi-raw/src/protocol/device_path.rs

@@ -1,5 +1,9 @@
+mod device_path_gen;
+
 use crate::{guid, Char16, Guid};
 
+pub use device_path_gen::{acpi, bios_boot_spec, end, hardware, media, messaging};
+
 /// Device path protocol.
 ///
 /// A device path contains one or more device path instances made of up