feat(init): add init crate with declarative boot manifest, boot sequence, supervisor and shutdown stubs

Also: make types from_raw/raw const fn, add create_process/kill/delegate/revoke to userspace syscall stubs.

crates/types/src/address.rs

@@ -2,11 +2,11 @@
 pub struct EntryPoint(usize);
 
 impl EntryPoint {
-    pub fn from_raw(addr: usize) -> Self {
+    pub const fn from_raw(addr: usize) -> Self {
         Self(addr)
     }
 
-    pub fn raw(&self) -> usize {
+    pub const fn raw(&self) -> usize {
         self.0
     }
 }
@@ -15,11 +15,11 @@ impl EntryPoint {
 pub struct StackPointer(usize);
 
 impl StackPointer {
-    pub fn from_raw(addr: usize) -> Self {
+    pub const fn from_raw(addr: usize) -> Self {
         Self(addr)
     }
 
-    pub fn raw(&self) -> usize {
+    pub const fn raw(&self) -> usize {
         self.0
     }
 }
@@ -28,11 +28,11 @@ impl StackPointer {
 pub struct VirtualAddress(usize);
 
 impl VirtualAddress {
-    pub fn from_raw(addr: usize) -> Self {
+    pub const fn from_raw(addr: usize) -> Self {
         Self(addr)
     }
 
-    pub fn raw(&self) -> usize {
+    pub const fn raw(&self) -> usize {
         self.0
     }
 }
@@ -41,11 +41,11 @@ impl VirtualAddress {
 pub struct PhysicalAddress(usize);
 
 impl PhysicalAddress {
-    pub fn from_raw(addr: usize) -> Self {
+    pub const fn from_raw(addr: usize) -> Self {
         Self(addr)
     }
 
-    pub fn raw(&self) -> usize {
+    pub const fn raw(&self) -> usize {
         self.0
     }
 

crates/types/src/macros.rs

@@ -4,11 +4,11 @@ macro_rules! kernel_id {
         pub struct $name($inner);
 
         impl $name {
-            pub fn from_raw(value: $inner) -> Self {
+            pub const fn from_raw(value: $inner) -> Self {
                 Self(value)
             }
 
-            pub fn raw(&self) -> $inner {
+            pub const fn raw(&self) -> $inner {
                 self.0
             }
         }