Installing C# dependencies has no progress

Issue Type: Bug

My internet connection is slow. Trying to join a collaboration session, but been looking at this for over an hour now:

> Installing C# dependencies...
> Platform: win32, x86_64
>
> Downloading package 'OmniSharp for Windows (.NET 4.6 / x64)' (33520 KB).................... Done!
> Validating download...
> Integrity Check succeeded.
> Installing package 'OmniSharp for Windows (.NET 4.6 / x64)'
>
> Downloading package '.NET Core Debugger (Windows / x64)' (41930 KB).................... Done!
> Validating download...
> Integrity Check succeeded.
> Installing package '.NET Core Debugger (Windows / x64)'
>
> Downloading package 'Razor Language Server (Windows / x64)' (50835 KB)...........

You just can't use an indeterminate progress scroller thingy for downloads as large has these! It currently only shows the total size of the download, and it should _at least_ also show download speed, time spent, and estimated time left.

Extension version: 1.21.17
VS Code version: Code 1.44.0 (2aae1f26c72891c399f860409176fe435a154b13, 2020-04-07T23:31:18.860Z)
OS version: Windows_NT x64 10.0.18362

System Info

|Item|Value|
|---|---|
|CPUs|Intel(R) Core(TM) i7-4790S CPU @ 3.20GHz (8 x 3200)|
|GPU Status|2d_canvas: enabled
flash_3d: enabled
flash_stage3d: enabled
flash_stage3d_baseline: enabled
gpu_compositing: enabled
multiple_raster_threads: enabled_on
oop_rasterization: disabled_off
protected_video_decode: unavailable_off
rasterization: enabled
skia_renderer: disabled_off_ok
video_decode: enabled
viz_display_compositor: enabled_on
viz_hit_test_surface_layer: disabled_off_ok
webgl: enabled
webgl2: enabled|
|Load (avg)|undefined|
|Memory (System)|31.95GB (14.95GB free)|
|Process Argv||
|Screen Reader|no|
|VM|0%|