Fix tsc watch restarting when it shouldn't

It seems reaching into lib/vscode for the types caused tsc to establish
watches that caused it to restart over and over while vscode was
building.

The strategy used here is to symlink it instead which is the same thing
we do for the proxy agent.

src/node/cli.ts

@@ -3,7 +3,7 @@ import { promises as fs } from "fs"
 import yaml from "js-yaml"
 import * as os from "os"
 import * as path from "path"
-import { Args as VsArgs } from "../../lib/vscode/src/vs/server/ipc"
+import { Args as VsArgs } from "../../typings/ipc"
 import { canConnect, generateCertificate, generatePassword, humanPath, paths } from "./util"
 
 export enum AuthType {

src/node/entry.ts

@@ -2,7 +2,7 @@ import { field, logger } from "@coder/logger"
 import * as cp from "child_process"
 import http from "http"
 import * as path from "path"
-import { CliMessage, OpenCommandPipeArgs } from "../../lib/vscode/src/vs/server/ipc"
+import { CliMessage, OpenCommandPipeArgs } from "../../typings/ipc"
 import { plural } from "../common/util"
 import { createApp, ensureAddress } from "./app"
 import {

src/node/vscode.ts

@@ -2,7 +2,7 @@ import { logger } from "@coder/logger"
 import * as cp from "child_process"
 import * as net from "net"
 import * as path from "path"
-import * as ipc from "../../lib/vscode/src/vs/server/ipc"
+import * as ipc from "../../typings/ipc"
 import { arrayify, generateUuid } from "../common/util"
 import { rootPath } from "./constants"
 import { settings } from "./settings"