Benchmarks for FirebladeECS

Originally seeded by replicating performance tests into a new form leveraging package-benchmark Documentation.

To run all the available benchmarks:

swift package benchmark --format markdown

For more help on the package-benchmark SwiftPM plugin:

swift package benchmark help

Creating a local baseline:

swift package --allow-writing-to-package-directory benchmark baseline update dev
swift package benchmark baseline list

Comparing to a the baseline 'alpha'

swift package benchmark baseline compare dev

For more details on creating and comparing baselines, read Creating and Comparing Benchmark Baselines.