Implement domain and endpoint modules with capability management, message passing, and scheduling features

crates/domain/src/resource.rs

@@ -0,0 +1,22 @@
+use types::{
+    address::VirtualAddress,
+    bounded::PageCount,
+    generation::Generation,
+    id::{EndpointId, IrqId, ProcessId, RegionId},
+};
+
+#[derive(Clone)]
+pub enum Resource {
+    Memory(RegionId),
+    Endpoint(EndpointId),
+    Process(ProcessId),
+    Interrupt(IrqId),
+    ProcessCreate,
+}
+
+pub struct MemoryRegion {
+    id: RegionId,
+    base: VirtualAddress,
+    size: PageCount,
+    generation: Generation,
+}