fix: allow group members to read group information (#14200)

* - allow group members to read basic Group info
- allow group members to see they are part of the group, but not see that information about other members
- add a GetGroupMembersCountByGroupID SQL query, which allows group members to see members count without revealing other information about the members
- add the group_members_expanded db view
- rewrite group member queries to use the group_members_expanded view
- add the RBAC ResourceGroupMember and add it to relevant roles
- rewrite GetGroupMembersByGroupID permission checks
- make the GroupMember type contain all user fields
- fix type issues coming from replacing User with GroupMember in group member queries
- add the MemberTotalCount field to codersdk.Group
- display `group.total_member_count` instead of `group.members.length` on the account page

coderd/database/sqlc.yaml

@@ -74,6 +74,8 @@ sql:
             go_type:
               type: "[]byte"
         rename:
+          group_member: GroupMemberTable
+          group_members_expanded: GroupMember
           template: TemplateTable
           template_with_name: Template
           workspace_build: WorkspaceBuildTable