feat(api): set up endpoint for sas code execution

src/routes/index.ts

@@ -0,0 +1,23 @@
+import express from 'express'
+import { processSas } from '../controllers'
+import { ExecutionResult, RequestQuery, isRequestQuery } from '../types'
+
+const router = express.Router()
+
+router.get('/', async (req, res) => {
+  const query = req.query
+
+  if (!isRequestQuery(query)) {
+    res.send('Welcome to @sasjs/server API')
+
+    return
+  }
+
+  const result: ExecutionResult = await processSas(query)
+
+  res.send(`<b>Executed!</b><br>
+<p>Log is located:</p> ${result.logPath}<br>
+<p>Log:</p> <textarea style="width: 100%; height: 100%">${result.log}</textarea>`)
+})
+
+export default router