📝 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/internal/profilemanager/config.go

@@ -719,7 +719,7 @@ func (config *Config) applyMDMPolicy(policy *mdm.Policy) {
 // parseURL parses and validates the URL for the named service.
 // It requires the URL to use the http or https scheme and, if no port is present,
 // appends ":443" for https or ":80" for http. On success it returns the parsed
-// *url.URL; on failure it returns a non-nil error.
+// ":80" is appended. The `serviceName` is used to contextualize error messages.
 func parseURL(serviceName, serviceURL string) (*url.URL, error) {
 	parsedMgmtURL, err := url.ParseRequestURI(serviceURL)
 	if err != nil {