Enable sub-language file coverage behind a ff

src/codeql.ts

@@ -20,6 +20,7 @@ import {
   Feature,
   FeatureEnablement,
   useCodeScanningConfigInCli,
+  CODEQL_VERSION_SUBLANGUAGE_FILE_COVERAGE,
 } from "./feature-flags";
 import { isTracedLanguage, Language } from "./languages";
 import { Logger } from "./logging";
@@ -611,6 +612,19 @@ export async function getCodeQLForCmd(
         extraArgs.push("--calculate-language-specific-baseline");
       }
 
+      if (
+        await features.getValue(Feature.SublanguageFileCoverageEnabled, this)
+      ) {
+        extraArgs.push("--sublanguage-file-coverage");
+      } else if (
+        await util.codeQlVersionAbove(
+          this,
+          CODEQL_VERSION_SUBLANGUAGE_FILE_COVERAGE,
+        )
+      ) {
+        extraArgs.push("--no-sublanguage-file-coverage");
+      }
+
       await runTool(
         cmd,
         [