📝 Add docstrings to mdm_integration

Docstrings generation was requested by @riccardomanfrin.

* https://github.com/netbirdio/netbird/pull/6374#issuecomment-4658991606

The following files were modified:

* `client/cmd/debug.go`
* `client/cmd/root.go`
* `client/internal/profilemanager/config.go`
* `client/mdm/policy.go`
* `client/mdm/policy_darwin.go`
* `client/mdm/policy_mobile.go`
* `client/mdm/policy_other.go`
* `client/mdm/policy_windows.go`
* `client/mdm/ticker.go`
* `client/server/mdm.go`
* `client/server/server.go`
* `client/ui/client_ui.go`
* `docs/netbird-macos.sh`

client/server/server.go

@@ -363,7 +363,16 @@ func (s *Server) SetConfig(callerCtx context.Context, msg *proto.SetConfigReques
 // fields (DNS labels, NAT external IPs). Extracted from SetConfig to
 // keep the handler's cognitive complexity below the SonarCube
 // threshold; the body of this function is intentionally linear and
-// branchy because each proto field is its own optional case.
+// setConfigInputFromRequest builds a profilemanager.ConfigInput from a SetConfigRequest proto.
+// 
+// It translates each provided proto field into the corresponding ConfigInput field,
+// preserving the request's semantics for "clean" vs explicit-empty slices/bytes and
+// converting optional numeric fields into typed pointers where applicable.
+// 
+// msg: the incoming SetConfigRequest whose fields are mapped into the returned ConfigInput.
+// 
+// Returns the constructed ConfigInput and a non-nil error if the active profile file path
+// cannot be determined.
 func setConfigInputFromRequest(msg *proto.SetConfigRequest) (profilemanager.ConfigInput, error) {
 	var config profilemanager.ConfigInput