[rpc] add FullProvenance
[rpc] add FullProvenance

This RPC scans the owner data to find the latest txid from a Bitmark
ID then dumps the entire provenance. Just to limit memory a maximum of
10,000 records are output, this should be sufficient for the current
"real" items", but client must check that the first record has
"isOwner:true" to be sure provenance is valid.

Signed-off-by: Christopher Hall <97c3bc3fef1a71b149f1095f758464e4b18eb35b@bitmark.com>

bitmark-inc/bitmarkd,bitmark-inc/bitmarkd