Fix CORS error on req too large

[kuzdogan]

Since the bodyParser, was set before the cors in server.ts, the response will have wrong CORS when body size limit is hit. Move the cors settings above bodyParser.

Also add conditional CORS settings as session requires cookies and "*" CORS is not possible. Remove the individual cors() middleware on every session route in VerificationController.

TODO: - [ ] Add informative message on the UI when HTTP status is 413

_{View in Huly HI-703}

[kuzdogan]

I am unable to reproduce this to write the necessary update to the UI 😅 The UI already has a file size check and it shows a message

sourcify/ui/src/pages/Verifier/index.tsx

Lines 102 to 111 in 8bc2608

	if (file.size > UI_MAX_FILE_SIZE) {
	const humanReadableSize = bytes(file.size);
	return setErrorMessage(
	`Added file ${
	file.name
	} is ${humanReadableSize} which is more than the maximum single file size of ${bytes(
	UI_MAX_FILE_SIZE
	)}`
	);
	}

Opening it for review

[marcocastignoli]

Everything looks good