Enable language specific baselines via feature flag

src/codeql.ts

@@ -16,6 +16,7 @@ import {
   Feature,
   FeatureEnablement,
   useCodeScanningConfigInCli,
+  CODEQL_VERSION_LANGUAGE_BASELINE_CONFIG,
 } from "./feature-flags";
 import { isTracedLanguage, Language } from "./languages";
 import { Logger } from "./logging";
@@ -574,6 +575,20 @@ export async function getCodeQLForCmd(
       ) {
         extraArgs.push(`--qlconfig-file=${qlconfigFile}`);
       }
+
+      if (
+        await features.getValue(Feature.LanguageBaselineConfigEnabled, this)
+      ) {
+        extraArgs.push("--calculate-language-specific-baseline");
+      } else if (
+        await util.codeQlVersionAbove(
+          this,
+          CODEQL_VERSION_LANGUAGE_BASELINE_CONFIG,
+        )
+      ) {
+        extraArgs.push("--no-calculate-language-specific-baseline");
+      }
+
       await runTool(
         cmd,
         [