[Feature] Allow configuring defaults for adding data

[Patricol]

I'd like to be able to change a plugin setting so that when I am viewing a table, instead of seeing an INSERT INTO statement in the bottom panel, it instead defaults to a Bulk Insert. I'd also like an option to set the Use the first row as a header (missing columns will be filled with NULL) checkbox as selected by default.

If you don't want an explicit setting, maybe just have the plugin remember what the last selected statement type and options were? For me, the options reset to the defaults every time I switch tables or open a new instance of the plugin.

Thank you!