Add file parameter to verify-included

[SteveLasker]

veracity works well with piping results into the verify-included command. When working with local files, it just requires cat file.json | veracity verify-included

To create independent, composable commands, I suggest we enable passing an existing file to the veracity command
Desired Output:

curl -sL $DATATRAILS_URL/archivist/v2/$EVENT_ID > event.json

# Show the local results
cat event.json | jq

#verify inclusion w/ith veracity
cat event.json | \
        veracity --data-url $DATATRAILS_URL/verifiabledata \
        --tenant=$PUBLIC_TENANT_ID \
        --loglevel=INFO \
        verify-included \
        ./event.json