Swapped tslint to eslint and fixed files

src/extensions/cli-extension.ts

@@ -1,13 +1,11 @@
-
-import { GluegunToolbox } from 'gluegun'
-
+import { GluegunToolbox } from 'gluegun';
 
 // add your CLI-specific functionality here, which will then be accessible
 // to your commands
 module.exports = (toolbox: GluegunToolbox) => {
   toolbox.foo = () => {
-    toolbox.print.info('called foo extension')
-  }
+    toolbox.print.info('called foo extension');
+  };
 
   // enable this if you want to read configuration in from
   // the current folder's package.json (in a "pwcli" property),
@@ -16,4 +14,4 @@ module.exports = (toolbox: GluegunToolbox) => {
   //   ...toolbox.config,
   //   ...toolbox.config.loadConfig("pwcli", process.cwd())
   // }
-}
+};