feat: Add service manager support

- Add a new service manager crate for dynamic service management
- Integrate service manager with Rhai for scripting
- Provide examples for circle worker management and basic usage
- Add comprehensive tests for service lifecycle and error handling
- Implement cross-platform support for macOS and Linux (zinit/systemd)

scripts/publish-all.sh

@@ -53,7 +53,7 @@ done
 # Crates to publish in dependency order
 CRATES=(
     "os"
-    "process" 
+    "process"
     "text"
     "net"
     "git"
@@ -63,6 +63,7 @@ CRATES=(
     "redisclient"
     "postgresclient"
     "zinit_client"
+    "service_manager"
     "mycelium"
     "rhai"
 )
@@ -179,6 +180,7 @@ update_dependencies() {
     sed -i.tmp "s|sal-virt = { path = \"../virt\" }|sal-virt = \"$version\"|g" "$crate_dir/Cargo.toml"
     sed -i.tmp "s|sal-mycelium = { path = \"../mycelium\" }|sal-mycelium = \"$version\"|g" "$crate_dir/Cargo.toml"
     sed -i.tmp "s|sal-zinit-client = { path = \"../zinit_client\" }|sal-zinit-client = \"$version\"|g" "$crate_dir/Cargo.toml"
+    sed -i.tmp "s|sal-service-manager = { path = \"../service_manager\" }|sal-service-manager = \"$version\"|g" "$crate_dir/Cargo.toml"
 
     # Clean up temporary files
     rm -f "$crate_dir/Cargo.toml.tmp"