feat(next-core): relay transform plugin

[kwonoj]

What

Part 1 for WEB-848.

This PR implements initial path to enable relay compiler option in Turbopack. PR is based on approach WEB-955, that passing custom plugin transform itself instead of trying to pass down configuration into turbopack. In result, this PR requires counterpart turbopack PR at vercel/turborepo#4721.

PR also refactors next-shared's transform bit, as we have grown number of custom transforms.

Unfortunately there are some runtime errors with this transforms, so it is not possible to use relay actually yet. WEB-956 tracks this. (swc-project/plugins#179)

[sokra]

Add an linear issue and reference that here

[sokra]

One of these should do it:

Suggested change

	let module_program = unwrap_module_program(program);
	let module_program = std::mem::take(program);

Suggested change

	let module_program = unwrap_module_program(program);
	let module_program = std::mem::replace(program, Program::dummy());

Suggested change

	let module_program = unwrap_module_program(program);
	let module_program = std::mem::replace(program, Program::Module(Module::dummy()));

[sokra]

When transform has been change to not return Option

Suggested change

	Some(module_program.fold_with(&mut next_dynamic(
	self.is_development,
	self.is_server,
	self.is_server_components,
	NextDynamicMode::Turbo,
	FileName::Real(ctx.file_path_str.into()),
	self.pages_dir.clone(),
	)))
	*program = module_program.fold_with(&mut next_dynamic(
	self.is_development,
	self.is_server,
	self.is_server_components,
	NextDynamicMode::Turbo,
	FileName::Real(ctx.file_path_str.into()),
	self.pages_dir.clone(),
	))

[sokra]

needs rebase

[ijjk]

Failing test suites

Commit: 27f6f93

pnpm testheadless test/e2e/middleware-dynamic-basepath-matcher/test/index.test.ts

• Middleware custom matchers basePath > should match query path

Expand output

● Middleware custom matchers basePath › should match query path

expect(received).toBe(expected) // Object.is equality

Expected: "another-page"
Received: "random"

  51 |     await browser.elementById('linkelement').click()
  52 |     const anotherPagePath = await browser.elementById('router-path').text()
> 53 |     expect(anotherPagePath).toBe('another-page')
     |                             ^
  54 |   })
  55 | })
  56 |

  at Object.<anonymous> (e2e/middleware-dynamic-basepath-matcher/test/index.test.ts:53:29)

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