Implement decoding non-Huffman encoded literal strings
Implement decoding non-Huffman encoded literal strings

Literal strings can have two different encoded representations:

 - Huffman-encoded using a Huffman code defined by HPACK
 - Raw literal

The raw literal case is implemented here with the other case left
as a placeholder.

tempbottle/solicit,jinnjuice/solicit,mlalic/solicit,Galvanization/solicit,stepancheg/solicit,gwicke/solicit