tye.yaml is overwritten without prompting to overwrite or create new

[dbreshears]

Issue Type: Bug

If you have an existing tye.yaml. And choose to run tye: initialize tye from command palatte , then there is no prompt to overwrite. Perhaps we should do the same as the when scaffolding the tye tasks which prompts asking to overwrite or create new

Extension version: 0.1.0-alpha
VS Code version: Code 1.56.0 (cfa2e218100323074ac1948c885448fdf4de2a7f, 2021-05-04T22:09:06.405Z)
OS version: Windows_NT x64 10.0.19042

System Info

Item	Value
CPUs	Intel(R) Core(TM) i7-8700 CPU @ 3.20GHz (12 x 3192)
GPU Status	2d_canvas: enabled gpu_compositing: enabled multiple_raster_threads: enabled_on oop_rasterization: enabled opengl: enabled_on rasterization: enabled skia_renderer: enabled_on video_decode: enabled vulkan: disabled_off webgl: enabled webgl2: enabled
Load (avg)	undefined
Memory (System)	31.85GB (11.77GB free)
Process Argv	. --crash-reporter-id 71129086-679a-4f55-a5bb-24dab978b4c9
Screen Reader	yes
VM	0%

A/B Experiments

vsins829:30139715
vsliv368cf:30146710
vsreu685:30147344
vspor879:30202332
vspor708:30202333
vspor363:30204092
vspre833:30267464
vshan820:30294714
vscus158:30286553

[philliphoff]

The difference here is that, for init, we simply defer to tye init which does the actual scaffolding vs. the extension being the one to scaffold the files. That said, we could check for the existence of the file before calling Tye and prompt the user to confirm.