Add the github-linguist package

This commit only adds a single package and all of its transitive
dependencies. The github-linguist package will be used for counting
lines of code as a baseline for databases we are analyzing.

node_modules/github-linguist/src/utils.ts

@@ -0,0 +1,25 @@
+import fs from 'fs';
+import path from 'path';
+// @ts-ignore
+import slash from 'slash2';
+
+const packagePath = slash(path.join(__dirname, '../', 'package.json'));
+
+/**
+ * Get package version.
+ *
+ * @export getVersion
+ * @returns {string}
+ */
+export function getVersion(): string {
+  const packageInfo = JSON.parse(fs.readFileSync(packagePath, 'utf8'));
+
+  return (packageInfo && packageInfo.version) || 'invalid version!';
+}
+
+export const ExtensionJustify = {
+  '.ts': 'typescript',
+  '.jsx': 'javascript',
+  '.js': 'javascript',
+  '.tsx': 'typescript',
+};