DEV: Add plugin outlets for after category/tag inputs in composer (#23363)

app/assets/javascripts/discourse/app/components/composer-container.hbs

@@ -180,6 +180,10 @@
                           prioritizedCategoryId=this.composer.prioritizedCategoryId
                         }}
                       />
+                      <PluginOutlet
+                        @name="after-composer-category-input"
+                        @outletArgs={{hash composer=this.composer.model}}
+                      />
                       <PopupInputTip
                         @validation={{this.composer.categoryValidation}}
                       />
@@ -196,6 +200,10 @@
                         minimum=this.composer.model.minimumRequiredTags
                       }}
                     />
+                    <PluginOutlet
+                      @name="after-composer-tag-input"
+                      @outletArgs={{hash composer=this.composer.model}}
+                    />
                     <PopupInputTip
                       @validation={{this.composer.tagValidation}}
                     />