feat: Add methods for cozy-app settings and instance settings manipulation

docs/api/cozy-client/README.md

@@ -930,6 +930,41 @@ Fetches a queryDefinition and run fetchMore on the query until the query is full
 
 ***
 
+### useSettings
+
+▸ **useSettings**<`T`>(`slug`, `keys`): `UseSettingsReturnValue`<`T`>
+
+Query the cozy-app settings corresponding to the given slug and
+return:
+
+*   the values corresponding to the given `keys`
+*   the `save()` method that can be used to edit the setting's value
+*   the query that manages the state during the fetching of the setting
+*   the mutation that manages the state during the saving of the setting
+
+#### Type parameters
+
+| Name | Type |
+| :------ | :------ |
+| `T` | extends `string` |
+
+*Parameters*
+
+| Name | Type | Description |
+| :------ | :------ | :------ |
+| `slug` | `string` | the cozy-app's slug containing the setting (special cases are: 'instance' for global settings and 'passwords' for bitwarden settings) |
+| `keys` | `T`\[] | The name of the setting to retrieve |
+
+*Returns*
+
+`UseSettingsReturnValue`<`T`>
+
+*Defined in*
+
+[packages/cozy-client/src/hooks/useSetting.js:24](https://github.com/cozy/cozy-client/blob/master/packages/cozy-client/src/hooks/useSetting.js#L24)
+
+***
+
 ### withClient
 
 ▸ **withClient**(`WrappedComponent`): `Function`