Adds support to adoCodespacesAuth.tenantID extension setting for conf…

[liguori]

Provides the 'adoCodespacesAuth.tenantID' extension setting to configure the Entra ID tenant to sign in to.

Address #14

[markphip]

@ronakj can you review this?

[ronakj]

Mostly looks good functionally. Just some minor code changes and we should be good to go.

Can you also update the package.json version (probably a minor bump to 1.2.0) and add a line in the README.md to explain this configuration? Thanks!

[ronakj]

Thanks @liguori. I will do a quick test from my side and then release it.

[ronakj]

When testing this, it seems to not work when requesting token. It authenticates fine initially, but when you request a token with the command ado-auth-helper get-access-token or with git fetch it just hangs.

There are two reasons from what I can see. The PR breaks the default assumption that getAccessToken when called without scopes uses the ADO scope. So when called from socket server handler it doesn't get the default scope now. Another reason might be because we need to pass the tenant in the calls to getAccessToken function when it's called from socket server handler.

@liguori can you create a followup PR. Maybe move the logic for getting tenant from configuration to the getAccessToken function and also fix the default scope assumption.

You can test it by updating the version number, running yarn vsce:package, download the generated vsix bundle and then open a codespace, search for "vsix" and install the local download

Then signout, add the tenant id config and then signin to microsoft account. Run ado-auth-helper get-access-token to test if it works.

[ronakj]

It's late for me today so I am gonna go, but I can also take a stab at fixing this tomorrow if you want.