Add documentation for new AS Notification/Profile feature

docs/stores/firebase.md

@@ -7,6 +7,7 @@ https://firebase.google.com/
 | Authentication | Yes        |
 | Directory      | No         |
 | Identity       | Yes        |
+| Profile        | No         |
 
 ## Requirements
 This backend requires a suitable Matrix client capable of performing Firebase authentication and passing the following

docs/stores/ldap.md

@@ -13,6 +13,7 @@ For NetIQ, replace all the `ldap` prefix in the configuration by `netiq`.
 | Authentication | Yes        |
 | Directory      | Yes        |
 | Identity       | Yes        |
+| Profile        | Yes        |
 
 ## Getting started
 ### Base

docs/stores/rest.md

@@ -13,6 +13,7 @@ To integrate this backend with your webapp, you will need to implement three spe
 | Authentication | Yes        |
 | Directory      | Yes        |
 | Identity       | Yes        |
+| Profile        | No         |
 
 ## Configuration
 | Key                              | Default                                        | Description                                          |

docs/stores/sql.md

@@ -11,6 +11,7 @@
 | Authentication | No         |
 | Directory      | Yes        |
 | Identity       | Yes        |
+| Profile        | Yes        |
 
 Due to the implementation complexity of supporting arbitrary hashing/encoding mechanisms or auth flow, Authentication
 will be out of scope of SQL Identity stores and should be done via one of the other identity stores, typically

docs/stores/synapse.md

@@ -7,6 +7,7 @@ Synapse's Database itself can be used as an Identity store.
 | Authentication | No         |
 | Directory      | Yes        |
 | Identity       | Yes        |
+| Profile        | Yes        |
 
 Authentication is done by Synapse itself.
 

docs/stores/wordpress.md

@@ -10,6 +10,7 @@ Two types of connections are required for full support:
 | Authentication | Yes        |
 | Directory      | Yes        |
 | Identity       | Yes        |
+| Profile        | No         |
 
 ## Requirements
 - [Wordpress](https://wordpress.org/download/) >= 4.4