add istanbul exclusions

Author: mchangrh

src/routes/generateToken.ts

@@ -23,6 +23,7 @@ export async function generateTokenRequest(req: GenerateTokenRequest, res: Respo
     if (type === TokenType.patreon || (type === TokenType.local && adminUserID === config.adminUserID)) {
         const licenseKey = await createAndSaveToken(type, code);
 
+        /* istanbul ignore else */
         if (licenseKey) {
             return res.status(200).send(`
                 <h1>

src/utils/innerTubeAPI.ts

@@ -18,6 +18,7 @@ async function getFromITube (videoID: string): Promise<innerTubeVideoDetails> {
     const result = await axios.post(url, data, {
         timeout: 3500
     });
+    /* istanbul ignore else */
     if (result.status === 200) {
         return result.data.videoDetails;
     } else {
@@ -39,6 +40,7 @@ export async function getPlayerData (videoID: string, ignoreCache = false): Prom
                 return data as innerTubeVideoDetails;
             }
         } catch (err) {
+            /* istanbul ignore next */
             return Promise.reject(err);
         }
     }