Add server request cache that uses cookie

[eleftherias]

Summary

Currently we have the ability to store a user's initial request using WebSessionServerRequestCache. This causes the WebSession to be read on every request.
We should provide an alternative that stores the initial request in a cookie instead of in the WebSession.

[eleftherias]

To use the CookieServerRequestCache, you can specify it in your security configuration.

@Bean
SecurityWebFilterChain springWebFilterChain(ServerHttpSecurity http) {
	return http
		.authorizeExchange(exchanges -> exchanges
			.anyExchange().authenticated()
		)
		.formLogin(withDefaults())
		.requestCache(cache -> cache
			.requestCache(new CookieServerRequestCache())
		)
		.build();
}