Implement Http3 static response header compression

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;

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