add first_party_analysis boolean to all status reports

src/actions-util.ts

@@ -7,6 +7,7 @@ import * as safeWhich from "@chrisgavin/safe-which";
 import { JSONSchemaForNPMPackageJsonFiles } from "@schemastore/package";
 
 import type { Config } from "./config-utils";
+import { EnvVar } from "./environment";
 import {
   doesDirectoryExist,
   getCodeQLDatabasePath,
@@ -259,6 +260,17 @@ export function getActionVersion(): string {
   return pkg.version!;
 }
 
+/**
+ * @returns a boolean indicating whether the analysis is considered to be first party.
+ *
+ * This is based on whether the init action has been used, which is only used for first party analysis.
+ * When a SARIF file has been generated by other means and submitted using the upload action, this is
+ * considered to be a third party analysis and is treated differently when calculating SLOs.
+ */
+export function isFirstPartyAnalysis(): boolean {
+  return process.env[EnvVar.INIT_ACTION_HAS_RUN] === "true";
+}
+
 /**
  * Returns the name of the event that triggered this workflow.
  *