add folder data.preview

[RandomFractals]

could be used for logs or data folders with csv, yml etc. data files

implementation notes:

• show list of supported data files from the folder in a grid data.view with filename, size in bytes, and date/time created updated timestamps
• fill table list in data.view with matching files for the supported data formats for quick launch of data.preview for the selected file from the list

[RandomFractals]

revising this idea again. from vscode dev community slack:

... also been thinking since my data preview ext. already supports jsonl, csv, etc., should I add preview logs from folder feature?

could be as simple pick a folder of your data dumps in any of the data formats I already support & I just loop and load 'em up for grid view display, basic charting, etc.

anyone interested in that kind of data view in vscode?

I currently support these data files: https://github.com/RandomFractals/vscode-data-preview#supported-json-config-binary--excel-data-file-formats