post https://{chain}.gateway.tatum.io/search/transactions
/search/transactions allows the caller to search for
transactions that meet certain conditions. Some conditions
include matching a transaction hash, containing an
operation with a certain status, or containing an operation
that affects a certain account.
/search/transactions is considered an "indexer" endpoint
and Rosetta implementations are not required to complete it
to adhere to the Rosetta spec. However, any Rosetta "indexer"
MUST support this endpoint.