feat: add OAuth2 applications (#11197)

* Add database tables for OAuth2 applications

These are applications that will be able to use OAuth2 to get an API key
from Coder.

* Add endpoints for managing OAuth2 applications

These let you add, update, and remove OAuth2 applications.

* Add frontend for managing OAuth2 applications

coderd/rbac/object_gen.go

@@ -11,6 +11,8 @@ func AllResources() []Object {
 		ResourceFile,
 		ResourceGroup,
 		ResourceLicense,
+		ResourceOAuth2ProviderApp,
+		ResourceOAuth2ProviderAppSecret,
 		ResourceOrgRoleAssignment,
 		ResourceOrganization,
 		ResourceOrganizationMember,