added workspace test

[iambumblehead]

closes #235

The new branch uses an updated version of resolvewithplus and should do the following things,

• when typescript is detected, should resolve moduleIds from things like { "main": "./index.js" }, where "index.ts" should be returned rather than "index.js",
• when typescript is detected, should resolve moduleIds from things like "./local-file.js" where "./local-file.ts" should be returned rather than "./local-file.js"

[iambumblehead]

Configuring deeply nested test folders to use local "esmock.js" with "--loader" in both windows and linux test environments is overly difficult. It would be easier to start this feature after the initialize hook is merged #240 so that "--loader" can be removed from these workspace tests.

[iambumblehead]

@koshic @tpluscode please review

[iambumblehead]

Merging, as these changes seem relatively low-risk. If issues around typescript resolution are reported, the resolver package could be reverted to the previous version.

[iambumblehead]

feel free to leave retro-active review, these changes are published to [email protected]

[tpluscode]

Well, most importantly, my project now works without any workarounds. Very nice. Thank you @iambumblehead!

[iambumblehead]

@tpluscode awesome thank you!