Implement WakeOnLAN functionality and offline status handling

- Add WakeOnLAN support for offline hosts using 'w' key
- Configure MAC addresses for all infrastructure hosts
- Implement Status::Offline for disconnected hosts
- Exclude offline hosts from status aggregation to prevent false alerts
- Update versions to 0.1.55

Cargo.lock

@@ -270,7 +270,7 @@ checksum = "a1d728cc89cf3aee9ff92b05e62b19ee65a02b5702cff7d5a377e32c6ae29d8d"
 
 [[package]]
 name = "cm-dashboard"
-version = "0.1.54"
+version = "0.1.55"
 dependencies = [
  "anyhow",
  "chrono",
@@ -292,7 +292,7 @@ dependencies = [
 
 [[package]]
 name = "cm-dashboard-agent"
-version = "0.1.54"
+version = "0.1.55"
 dependencies = [
  "anyhow",
  "async-trait",
@@ -315,7 +315,7 @@ dependencies = [
 
 [[package]]
 name = "cm-dashboard-shared"
-version = "0.1.54"
+version = "0.1.55"
 dependencies = [
  "chrono",
  "serde",