E2E Tests

[kylecarbs]

Should run E2E tests on the compiled binary.

Works as expected:

• --port flag
• --password flag
• --allow-http flag
• --no-auth flag
• Can load in successfully.
• Can open file
• Can create file
• Can delete file
• Can install extension
• Can uninstall extension
• Can debug JavaScript file

[nhooyr]

We can do this at some later point.