[data-export] Performance display and checkbox toggle common component

[nshulman]

Describe your changes

• add performance metrics to data export for queries with batch count and min/max/avg time
• created reusable CheckboxToggle for tab options
• added Display Query Execution Time checkbox toggle to Data Export tab on options
• minor cleanup/linting
• Replaced data export "record(s)" with plural function to display "Exported n records" for 0 or more than 1 record, "Exported 1 record" for 1

Issue ticket number and link

n/a

Checklist before requesting a review

• [ x ] I have read and understand the Contributions section
• [ x ] Target branch is releaseCandidate and not master
• [ x ] I have performed a self-review of my code
• [ x ] I ran the unit tests and my PR does not break any tests
• [ x ] I documented the changes I've made on the CHANGES.md and followed actual conventions
• [ x ] I added a new section on how-to.md (optional)

[tprouvot]

Great @nshulman thanks for all those additions 👏