Add plugin docs page

app/ui/src/main/java/de/mm20/launcher2/ui/settings/plugins/PluginsSettingsScreen.kt

@@ -38,7 +38,10 @@ fun PluginsSettingsScreen() {
     val pluginPackages by viewModel.pluginPackages.collectAsState(null)
     val enabledPackages by viewModel.enabledPluginPackages.collectAsState(emptyList())
     val disabledPackages by viewModel.disabledPluginPackages.collectAsState(emptyList())
-    PreferenceScreen(title = stringResource(R.string.preference_screen_plugins)) {
+    PreferenceScreen(
+        title = stringResource(R.string.preference_screen_plugins),
+        helpUrl = "https://kvaesitso.mm20.de/docs/user-guide/concepts/plugins"
+    ) {
         when {
             pluginPackages?.isEmpty() == true -> {
                 item {

docs/docs/user-guide/concepts/plugins.md

@@ -0,0 +1,50 @@
+# Plugins
+
+Plugins are a way to extend the launcher's functionality. Plugins act as data providers for several
+launcher components.
+
+As of now, only weather provider plugins and file search plugins are supported, but in the long
+term,
+support for all search categories is planned.
+
+## Usage
+
+### Installation
+
+Plugins are installed the same way as any other app. You can either download them from an app store,
+or install them manually as APK files.
+
+### Activation
+
+After the plugin has been installed, it needs to be activated in the launcher settings. To do this,
+go to settings > plugins, tap on the plugin you want to activate, and enable it. The plugin will
+show a permission dialog. Tap on "Allow" to give the launcher the necessary permission to access
+the plugin's data.
+
+Next, you may or may not need to perform steps to configure the plugin. For example, a plugin might
+require you to sign in with an account in order to use it. A banner is shown when additional
+configuration steps are needed:
+
+<img src="/img/plugin-configuration.png" width="300"/>
+
+Last but not least, you need to enable the plugin functionalities that you want to use.
+
+For weather plugins, you need to change the weather integration settings to use the plugin as
+weather provider.
+
+For search plugins, you need to enable the search provider in search settings. Shortcuts to these
+settings are available on the plugin's settings page.
+
+## Available plugins
+
+As of now, the following plugins are available:
+
+- **OneDrive plugin**: adds OneDrive file
+  search [[Github]](https://github.com/Kvaesitso/Plugin-OneDrive) [[Download]](https://fdroid.mm20.de/app/de.mm20.launcher2.plugin.onedrive)
+- **OpenWeatherMap plugin**: adds OpenWeatherMap weather
+  provider [[Github]](https://github.com/Kvaesitso/Plugin-OpenWeatherMap) [[Download]](https://fdroid.mm20.de/app/de.mm20.launcher2.plugin.openweathermap)
+
+## Plugin development
+
+If you are a developer and you are interested in developing your own plugin for the launcher,
+you can find more information in the [developer guide](/docs/developer-guide/plugins/get-started).

docs/docs/user-guide/sidebar.ts

@@ -20,6 +20,10 @@ export const UserGuideSidebar: DefaultTheme.SidebarItem[] = [
         text: 'Tags',
         link: '/docs/user-guide/concepts/tags',
       },
+      {
+        text: 'Plugins',
+        link: '/docs/user-guide/concepts/plugins',
+      },
     ],
   },
   {