MM-44101: GraphQL: Add sidebar categories at the top level (#20178)

Also, add a negate parameter to the team members to get
all sidebarcategories except the default team.

```release-note
NONE
```

api4/schema.graphqls

@@ -7,7 +7,8 @@ type Query {
 	config(): StringMap!
 	license(): StringMap!
 	teamMembers(userId: String!,
-		teamId: String = ""): [TeamMember]!
+		teamId: String = "",
+		excludeTeam: Boolean = false): [TeamMember]!
 	channels(userId: String!,
 		teamId: String = "",
 		includeDeleted: Boolean = false,
@@ -24,6 +25,8 @@ type Query {
 		first: Int = 60,
 		after: String = "",
 		lastUpdateAt: Float = 0): [ChannelMember]!
+	sidebarCategories(userId: String!,
+		teamId: String!): [SidebarCategory]!
 }
 
 scalar ChannelType