Export benchmark

[jamesmarkchan]

Under the file menu add an Export sub menu and three sub menu options to export to formats:

1. csv
2. json
3. xml

Allow the user to select the benchmarks to export by selecting from the benchmarks tab or provide a dialogue window with benchmarks where the user can select the benchmarks to export.

Allow the user to select where the exported data will be saved to but default to the Documents\jDiskMark Benchmarks directory and create it if it does not already exist. Note the intentional space.

exports should be logged.

potential file naming:

2025-07-22_<timestamp>_JDM_DellXPS15_FullReport.csv
2025-07-22_<timestamp>_JDM_DellXPS15_FullReport.json
2025-07-22_<timestamp>_JDM_DellXPS15_FullReport.xml

or if a single drive model is selected for export:
2025-07-22_<timestamp>_JDM_DellXPS15_KingstonNV2_FullReport.csv