added docs for the make service CLI command

Author: TomJaeger

docs/cli/built-in-commands/make-service.md

@@ -0,0 +1,25 @@
+# make:service
+
+Service Generator -- Creates a new service for an add-on
+
+## Options list:
+
+```
+    --addon=<value>
+    -a <value>
+        Name of the add-on you want to add the service to
+
+    --singleton
+    -s
+        Register the generated service in `services.singletons`
+```
+
+## Examples:
+
+### Generating a service:
+
+`php eecli.php make:service MyService --addon=my_existing_addon`
+
+### Generating a singleton service:
+
+`php eecli.php make:service MyService --addon=my_existing_addon --singleton`

docs/toc_sections/_advanced_usage_toc.yml

@@ -688,6 +688,8 @@
           href: cli/built-in-commands/migrate.md
         - name: Model Generator
           href: cli/built-in-commands/make-model.md
+        - name: Service Generator
+          href: cli/built-in-commands/make-service.md
         - name: Prolet Generator
           href: cli/built-in-commands/make-prolet.md
         - name: Sync Conditional Fields