#73 New data model

[jamesmarkchan]

summary of changes:

1. refactored benchmark data model to separate benchmark from operation
   • jpa references updated, cascade all
   • Parent class is Benchmark, BenchmarkOperation is the child class
   • allows more complex modeling like crystal disk mark models
2. keyboard can now be used to select a new record in the benchmark operation history will automatically load the record
3. Benchmark tab renamed to Benchmark Operations
4. introduced benchmark type which translates to IOMode at the operation level
5. fixed updating of num threads and Benchmark Type on load

[vpstackhub]

Tested on Windows 11 -Branch: new-data-model
I successfully cloned the updated repo and checked out the new-data-model branch. After building the project in NetBeans, the UI launched cleanly with no errors or build issues.
Attaching screenshot of the running interface for confirmation.
Everything looks great from my side-no regressions or crashes observed. Ready for merge!

[vpstackhub]