feat: Add DKMS support for Depot-managed kernel modules

- Introduced a new `dkms` module in the installation helpers.
- Updated `BuildType` enum to include `Dkms`.
- Enhanced `PackageSpec` to validate DKMS-specific fields and added methods to retrieve effective DKMS names, versions, and install directories.
- Implemented DKMS build and installation logic in a new `dkms.rs` file, including staging source trees and lifecycle scripts.
- Added runtime support for managing installed DKMS modules, including autoinstall and removal functionalities.
- Created tests to validate DKMS parsing and module management.

src/builder/mod.rs

@@ -4,6 +4,7 @@ mod autotools;
 mod bin;
 mod cmake;
 mod custom;
+mod dkms;
 mod makefile;
 mod meson;
 mod perl;
@@ -489,6 +490,13 @@ pub(crate) fn requested_development_package() -> Option<String> {
     crate::build_options::requested_development_package()
 }
 
+pub(crate) fn stage_generated_lifecycle_scripts(spec: &PackageSpec, destdir: &Path) -> Result<()> {
+    match spec.build.build_type {
+        BuildType::Dkms => dkms::stage_lifecycle_scripts(spec, destdir),
+        _ => Ok(()),
+    }
+}
+
 fn configured_install_dir(value: &str, default: &str) -> String {
     let trimmed = value.trim();
     if trimmed.is_empty() {
@@ -1100,6 +1108,14 @@ pub fn build(
             export_compiler_flags,
             host_build_dir,
         ),
+        BuildType::Dkms => dkms::build(
+            spec,
+            src_dir,
+            destdir,
+            cross,
+            export_compiler_flags,
+            host_build_dir,
+        ),
         BuildType::Bin => bin::build(
             spec,
             src_dir,