* Implement last opened functionality
Fixes https://github.com/cdr/code-server/issues/4619
* Fix test temp dirs not being cleaned up
* Mock logger everywhere
This suppresses all the error and debug output we generate which makes
it hard to actually find which test has failed. It also gives us a
standard way to test logging for the few places we do that.
* Use separate data directories for unit test instances
Exactly as we do for the e2e tests.
* Add integration tests for vscode route
* Make settings use --user-data-dir
Without this test instances step on each other feet and they also
clobber your own non-test settings.
* Make redirects consistent
They will preserve the trailing slash if there is one.
* Remove compilation check
If you do a regular non-watch build there are no compilation stats so
this bricks VS Code in CI when running the unit tests.
I am not sure how best to fix this for the case where you have a build
that has not been packaged yet so I just removed it for now and added a
message to check if VS Code is compiling when in dev mode.
* Update code-server update endpoint name
Also too the opportunity to rewrite the build script since there was a
change in the build steps (mainly how the product JSON is inserted) and
to get the build changes out of the patch. It also no longer relies on
external caching (we'll want to do this within CI instead).
