feat(code-server): add extension_dir variable

[michaelbrewer]

module "code-server" {
  source         = "registry.coder.com/modules/code-server/coder"
  version        = "1.0.10"
  agent_id       = coder_agent.main.id
  folder         = "${local.workspace_home}/${local.folder_name}"
  install_prefix = "${local.workspace_home}/.code-server"
  extensions_dir = "${local.workspace_home}/.code-server/extensions"
  use_cached     = true
  order          = 2
  slug           = "coder-server"
  settings = {
    "workbench.colorTheme" : "Visual Studio Dark"
    "workbench.startupEditor" : "readme"
  }
   extensions = [
     "ms-python.python",
     "hashicorp.terraform",
     "ms-azuretools.vscode-docker"
  ]
}

closes #204

[michaelbrewer]

Anything else to look at @code-asher @mafredri ?

[code-asher]

Nothing from me, I am 👍 with merging.

If the exit code works in Microsoft's server, maybe it was recently fixed. I think we have a pending update, I will see if it resolves the issue today. It did not

[code-asher]

Figured out the exit code issue, next release today will fix this (will be promoted to a full release early next week).

Edit: out now, 4.23.0