Limit TLV stream decoding to type ranges

Limit TLV stream decoding to type ranges

BOLT 12 messages are limited to a range of TLV record types. Refactor
decode_tlv_stream into a decode_tlv_stream_range macro for limiting
which types are parsed. Requires a SeekReadable trait for rewinding when
a type outside of the range is seen. This allows for composing TLV
streams of different ranges.

Updates offer parsing accordingly and adds a test demonstrating failure
if a type outside of the range is included.