Implement Http3 static response header compression

[Tratcher]

Http3 (QPack) supports a static list of headers that can be used for compression. This is implemented today for decoding request headers but not when encoding response headers.

We support the same feature for Http/2 here:

aspnetcore/src/Servers/Kestrel/Core/src/Internal/Http2/Http2HeaderEnumerator.cs

Lines 145 to 150 in b9efadc

	internal static int GetResponseHeaderStaticTableId(KnownHeaderType responseHeaderType)
	{
	switch (responseHeaderType)
	{
	case KnownHeaderType.CacheControl:
	return H2StaticTable.CacheControl;

[ghost]

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We're moving this issue to the Next sprint planning milestone for future evaluation / consideration. We would like to keep this around to collect more feedback, which can help us with prioritizing this work. We will re-evaluate this issue, during our next planning meeting(s).
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[ghost]

We've moved this issue to the Backlog milestone. This means that it is not going to be worked on for the coming release. We will reassess the backlog following the current release and consider this item at that time. To learn more about our issue management process and to have better expectation regarding different types of issues you can read our Triage Process.