Issue Type

• Feature request

Current Behavior

Formatter options are not supported.

Expected Behavior

Add a flag which would allow the user to specify one or multiple options for a formatter.

The main use case is for the SQL formatter, but other formatters could benefit from it (i.e. specify the number of space to indent the JSON output).

A name for the flag could be --fomat-options and should take a list of key/value pairs as parameters.

Examples:

scrapd -v --format sql --fomat-options engine=postgreql,upsert=true,createtable=true,droptableifexists=true
scrapd -v --format json --fomat-options indent=4

If an option is unknown, the process should log the culprit, but continue nonetheless.