feat: Add templates to create working release (#422)

* Add templates

* Move API structs to codersdk

* Back to green tests!

* It all works, but now with tea! 🧋

* It works!

* Add cancellation to provisionerd

* Tests pass!

* Add deletion of workspaces and projects

* Fix agent lock

* Add clog

* Fix linting errors

* Remove unused CLI tests

* Rename daemon to start

* Fix leaking command

* Fix promptui test

* Update agent connection frequency

* Skip login tests on Windows

* Increase tunnel connect timeout

* Fix templater

* Lower test requirements

* Fix embed

* Disable promptui tests for Windows

* Fix write newline

* Fix PTY write newline

* Fix CloseReader

* Fix compilation on Windows

* Fix linting error

* Remove bubbletea

* Cleanup readwriter

* Use embedded templates instead of serving over API

* Move templates to examples

* Improve workspace create flow

* Fix Windows build

* Fix tests

* Fix linting errors

* Fix untar with extracting max size

* Fix newline char

examples/gcp-windows/README.md

@@ -0,0 +1,5 @@
+---
+name: Develop in Windows on Google Cloud
+description: Get started with Windows development on Google Cloud.
+tags: [cloud, google]
+---

examples/gcp-windows/main.tf

@@ -0,0 +1,76 @@
+terraform {
+  required_providers {
+    coder = {
+      source  = "coder/coder"
+    }
+  }
+}
+
+variable "gcp_credentials" {
+  sensitive = true
+}
+
+variable "gcp_project" {
+  description = "The Google Cloud project to manage resources in."
+}
+
+variable "gcp_region" {
+  default = "us-central1"
+}
+
+provider "google" {
+  project = var.gcp_project
+  region = var.gcp_region
+  credentials = var.gcp_credentials
+}
+
+data "coder_workspace" "me" {
+}
+
+data "coder_agent_script" "dev" {
+  arch = "amd64"
+  os   = "windows"
+}
+
+data "google_compute_default_service_account" "default" {
+}
+
+resource "random_string" "random" {
+  count = data.coder_workspace.me.transition == "start" ? 1 : 0
+  length  = 8
+  special = false
+}
+
+resource "google_compute_instance" "dev" {
+  zone         = "us-central1-a"
+  count        = data.coder_workspace.me.transition == "start" ? 1 : 0
+  name         = "coder-${lower(random_string.random[0].result)}"
+  machine_type = "e2-medium"
+  network_interface {
+    network = "default"
+    access_config {
+      // Ephemeral public IP
+    }
+  }
+  boot_disk {
+    initialize_params {
+      image = "projects/windows-cloud/global/images/windows-server-2022-dc-core-v20220215"
+    }
+  }
+  service_account {
+    email  = data.google_compute_default_service_account.default.email
+    scopes = ["cloud-platform"]
+  }
+  metadata = {
+    windows-startup-script-ps1 = data.coder_agent_script.dev.value
+    serial-port-enable = "TRUE"
+  }
+}
+
+resource "coder_agent" "dev" {
+  count = length(google_compute_instance.dev)
+  auth {
+    type        = "google-instance-identity"
+    instance_id = google_compute_instance.dev[0].instance_id
+  }
+}