feat: normalized signatures webpack & vite servers

[elevatebart]

• Closes https://cypress-io.atlassian.net/browse/UNIFY-293

User facing changelog

In preparation for new plugins syntax, add the needed signatures to vite and webpack dev server

Additional details

https://www.notion.so/cypressdx/Dev-server-module-signatures-exports-db9cf2518a1b485a9672811f3e895de7

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[cypress]

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Test summary

18544 • 0 • 214 • 7 • 2

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Run details

Project	cypress
Status	Passed
Commit	497ec2c
Started	Oct 12, 2021 8:21 PM
Ended	Oct 12, 2021 8:34 PM
Duration	12:52 💡
OS	Linux Debian - 10.9
Browser	Multiple

View run in Cypress Dashboard ➡️

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Flakiness

	cypress/proxy-logging-spec.ts		1
1	... > works with forceNetworkError
	e2e/redirects_spec.js		1
1	redirection > meta > binds to the new page after a timeout

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[cowboy]

I'd like to see one minor change. Also, this PR is missing tests. Can you add them?

[cowboy]

@elevatebart what is the plan for testing these changes? It would be good to get them merged in, but I'm hesitant to approve the PR if there are no tests being added to assert the new changes are correct.

[elevatebart]

@cowboy I decided to add some tests after all.
They will be hard to justify in the future but they are easy to delete.

• in a33383b I added a test for vite-dev-server
• in d283dd9 I added them for webpack-dev-server

I hope this helps you approve of this change.
Keep me posted if you have any Qs

[cowboy]

I don't really understand the tests, but as long as they give you confidence, 👍🏻 . Only a few other questions to be answered or addressed.