serve webapp from proxy.ts rather than ad-hoc

src/srv/proxy.ts

@@ -3,10 +3,16 @@
 import express from "express"
 import cors from "cors"
 import compression from "compression"
+import path from "path"
 
 const app = express()
 app.use(cors())
 app.use(compression())
+app.use(express.static(path.resolve("src")))
+
+app.get("/", (req, res) => {
+    res.sendFile("src/index.html", { root: "." })
+})
 
 app.get("/version", (req, res) => {
     let host = req.query.host