Plugin api improvements (#4935)

* Support hook into App component
* Add hookable PluginSettings component
* Add useSettings to plugin hooks
* Make setting inputs hookable
* Add hooks for performer details panel
* Update docs

ui/v2.5/src/pluginApi.tsx

@@ -15,6 +15,7 @@ import { useSpriteInfo } from "./hooks/sprite";
 import { useToast } from "./hooks/Toast";
 import Event from "./hooks/event";
 import { before, instead, after, components, RegisterComponent } from "./patch";
+import { useSettings } from "./components/Settings/context";
 
 // due to code splitting, some components may not have been loaded when a plugin
 // page is loaded. This function will load all components passed to it.
@@ -92,6 +93,7 @@ export const PluginApi = {
     useLoadComponents,
     useSpriteInfo,
     useToast,
+    useSettings,
   },
   patch: {
     // intercept the arguments of supported functions