Draft: Resolve "Improve efficiency with jq processing"

Closes #10 (closed)

Currently, the HAR file is processed by a series of separate jq commands. This method is not efficient, as Bash must invoke jq, and jq must process the entire file, multiple times. There is a performance penalty as a result.

This MR improves the efficiency by building a single jq "script", and invokes jq once with that script. The processing of the file occurs once.

Initial testing has concluded that performance improvements are significant.