Avoid analyzing excluded language files for line counting

This change passes in a list of file types to the line counting
analysis. These are the languages for the databases being analyzed.
Line count analysis is restricted to these files.

lib/count-loc.js

@@ -13,6 +13,13 @@ const supportedLanguages = {
     ruby: "rb",
     typescript: "js",
 };
+const supportedLanguagesReversed = Object.entries(supportedLanguages).reduce((obj, [key, value]) => {
+    if (!obj[value]) {
+        obj[value] = [];
+    }
+    obj[value].push(key);
+    return obj;
+}, {});
 /**
  * Count the lines of code of the specified language using the include
  * and exclude glob paths.
@@ -26,8 +33,9 @@ const supportedLanguages = {
 async function countLoc(cwd, include, exclude, dbLanguages, logger) {
     const result = await new github_linguist_1.LocDir({
         cwd,
-        include,
+        include: ["**"].concat(include || []),
         exclude,
+        analysisLanguages: dbLanguages.flatMap((lang) => supportedLanguagesReversed[lang]),
     }).loadInfo();
     // The analysis counts LoC in all languages. We need to
     // extract the languages we care about. Also, note that