feat(website): add translation progress

Closes #1173
Closes #1170
Closes #1102

docs/src/api/crowdin.js

@@ -0,0 +1,50 @@
+const crowdin = require('@crowdin/crowdin-api-client');
+const personalToken = process.env.CROWDIN_PERSONAL_TOKEN;
+const projectId = '574591';
+
+/**
+ * Initialization of crowdin client
+ * @return {object} crowdin client
+ */
+const initClient = () => {
+  if (!personalToken) {
+    console.warn(
+      'No crowding personal token, some features might not work as expected'
+    );
+    return null;
+  }
+
+  return new crowdin.default({
+    token: personalToken
+  });
+};
+
+/**
+ * Get translation progress
+ * @return {object} translation progress
+ */
+async function getTranslationProgress() {
+  let translationProgress = {};
+  const { translationStatusApi } = initClient() || {};
+
+  if (!translationStatusApi) {
+    return translationProgress;
+  }
+
+  await translationStatusApi
+    .getProjectProgress(projectId)
+    .then((res) => {
+      res.data.forEach((item) => {
+        translationProgress[item.data.languageId] = item.data.approvalProgress;
+      });
+    })
+    .catch((err) => {
+      console.error(err);
+    });
+
+  return translationProgress;
+}
+
+module.exports = {
+  getTranslationProgress
+};