feat: add filtering by service account (#23468)

You can now filter by/out service accounts using
`service_account:true/false` or using the filter dropdown.

coderd/apidoc/docs.go

@@ -17426,6 +17426,9 @@ const docTemplate = `{
                         "$ref": "#/definitions/codersdk.SlimRole"
                     }
                 },
+                "is_service_account": {
+                    "type": "boolean"
+                },
                 "last_seen_at": {
                     "type": "string",
                     "format": "date-time"

coderd/apidoc/swagger.json

@@ -15851,6 +15851,9 @@
 						"$ref": "#/definitions/codersdk.SlimRole"
 					}
 				},
+				"is_service_account": {
+					"type": "boolean"
+				},
 				"last_seen_at": {
 					"type": "string",
 					"format": "date-time"