feat: support tls client hello bytes callback in Kestrel

[DeagleGross]

Supporting TLS Client Hello callback in Kestrel

HTTP.SYS contribution was done in this PR

Description

Adding a new property to HttpsConnectionAdapterOptions - TlsClientHelloBytesCallback (added to public API).
It allows to subscribe to the TLS client hello message parsed from the ConnectionContext.Transport.Input:

options.TlsClientHelloBytesCallback = (connection, clientHelloBytes) =>
{
    Logger.LogDebug("[Received TlsClientHelloBytesCallback] Connection: {0}; TLS client hello buffer: {1}", connection.ConnectionId, clientHelloBytes.Length);
};

If property HttpsConnectionAdapterOptions.TlsClientHelloBytesCallback is set (not null), then new middleware is added before HttpsConnectionMiddleware.

The implementation is doing the following:

1. waiting for data to come
2. if there is enough data, try to parse TLS and determine if we need to invoke a callback
3. if there is not enough data, we either wait (not end of the stream) or simply continue the middleware pipeline

Fixes #60805

[gfoidl]

LGTM -- just a small comment.

[DeagleGross]

add tests for SSL 2.0 and SSL 3.0

[DeagleGross]

add tests for SSL 2.0 and SSL 3.0

done