Data type in debugger watch list hides variable value

[ardnew]

Issue Type: Bug

When halting any Go program under debugger dlv, the Variables and Watch panes in the Run and Debug panel show variables using their full, absolute type preceding its current value. With many nested packages, it makes values hard to see without expanding each individually.

You can see in the attached screenshot that the entire Variables list is useless – it redundantly shows only the path prefix for local types defined in the current package being debugged.

Is there any way to define the formatting for the watch/local variables? Or is there a way to modify how it shows the type?
For example, the language server gopls has a configuration option that narrows type paths:

  "gopls": {
    "formatting.local": "github.com/ardnew"
	// Project-specific settings.json can narrow the scope further, e.g.:
    //"formatting.local": "github.com/ardnew/bases"
  }

If the debugger can refer to that, great; otherwise, could a similar option in the Go extension's settings be added to copy this behavior?

Extension version: 0.36.0
VS Code version: Code 1.67.1 (Universal) (da15b6fd3ef856477bf6f4fb29ba1b7af717770d, 2022-05-06T12:37:16.526Z)
OS version: Darwin x64 21.6.0
Restricted Mode: No

System Info

Item	Value
CPUs	Intel(R) Core(TM) i7-7700HQ CPU @ 2.80GHz (8 x 2800)
GPU Status	2d_canvas: enabled canvas_oop_rasterization: disabled_off direct_rendering_display_compositor: disabled_off_ok gpu_compositing: enabled metal: disabled_off multiple_raster_threads: enabled_on oop_rasterization: enabled opengl: enabled_on rasterization: enabled raw_draw: disabled_off_ok skia_renderer: enabled_on video_decode: enabled video_encode: enabled webgl: enabled webgl2: enabled
Load (avg)	2, 2, 2
Memory (System)	16.00GB (0.77GB free)
Process Argv	. --crash-reporter-id d1db2c30-84ae-4a50-be0a-79d992e054e5
Screen Reader	no
VM	0%

[findleyr]

CC @suzmue @hyangah -- is there any way to improve this UX? Can we use a package-local qualifier, rather than fully-qualified symbols?