feat: add ability for users to convert their password login type to oauth/github login (#8105)

* Currently toggled by experiment flag

---------

Co-authored-by: Bruno Quaresma <bruno@coder.com>

coderd/audit/diff.go

@@ -17,7 +17,8 @@ type Auditable interface {
 		database.WorkspaceBuild |
 		database.AuditableGroup |
 		database.License |
-		database.WorkspaceProxy
+		database.WorkspaceProxy |
+		database.AuditOAuthConvertState
 }
 
 // Map is a map of changed fields in an audited resource. It maps field names to

coderd/audit/request.go

@@ -84,6 +84,8 @@ func ResourceTarget[T Auditable](tgt T) string {
 		return strconv.Itoa(int(typed.ID))
 	case database.WorkspaceProxy:
 		return typed.Name
+	case database.AuditOAuthConvertState:
+		return string(typed.ToLoginType)
 	default:
 		panic(fmt.Sprintf("unknown resource %T", tgt))
 	}
@@ -111,6 +113,9 @@ func ResourceID[T Auditable](tgt T) uuid.UUID {
 		return typed.UUID
 	case database.WorkspaceProxy:
 		return typed.ID
+	case database.AuditOAuthConvertState:
+		// The merge state is for the given user
+		return typed.UserID
 	default:
 		panic(fmt.Sprintf("unknown resource %T", tgt))
 	}
@@ -138,6 +143,8 @@ func ResourceType[T Auditable](tgt T) database.ResourceType {
 		return database.ResourceTypeLicense
 	case database.WorkspaceProxy:
 		return database.ResourceTypeWorkspaceProxy
+	case database.AuditOAuthConvertState:
+		return database.ResourceTypeConvertLogin
 	default:
 		panic(fmt.Sprintf("unknown resource %T", typed))
 	}