Add an option to suppress the legal banner on each run

[marktoman]

Issue Description

Steps to Reproduce

1. Open a C# project.
2. Run the project

Expected Behavior

Seeing the uncluttered output of my code.

Actual Behavior

-------------------------------------------------------------------
You may only use the Microsoft .NET Core Debugger (vsdbg) with
Visual Studio Code, Visual Studio or Visual Studio for Mac software
to help you develop and test your applications.
-------------------------------------------------------------------

my output

Reason

The banner may provide useful information on the first 1-10 runs, but since then, at best it only consumes the precious space for your program output, at worst it reminds you that the first most important thing about whatever you are trying to achieve is the fact that MS employ a legal dept.

Logs

OmniSharp log

Post the output from Output-->OmniSharp log here

C# log

Post the output from Output-->C# here

Environment information

VSCode version: 1.43.2
C# Extension: 1.21.16

Dotnet Information

.NET Core SDK (reflecting any global.json): Version: 3.1.201 Commit: b1768b4ae7

Runtime Environment:
OS Name: Windows
OS Version: 10.0.18363
OS Platform: Windows
RID: win10-x64
Base Path: C:\Program Files\dotnet\sdk\3.1.201\

Host (useful for support):
Version: 3.1.3
Commit: 4a9f85e9f8

.NET Core SDKs installed:
2.1.509 [C:\Program Files\dotnet\sdk]
3.1.101 [C:\Program Files\dotnet\sdk]
3.1.200 [C:\Program Files\dotnet\sdk]
3.1.201 [C:\Program Files\dotnet\sdk]

.NET Core runtimes installed:
Microsoft.AspNetCore.All 2.1.1 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All]
Microsoft.AspNetCore.All 2.1.13 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All]
Microsoft.AspNetCore.All 2.1.17 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All]
Microsoft.AspNetCore.App 2.1.1 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 2.1.13 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 2.1.17 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 3.1.1 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 3.1.2 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 3.1.3 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.NETCore.App 2.1.13 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 2.1.17 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 3.1.1 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 3.1.2 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 3.1.3 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.WindowsDesktop.App 3.1.1 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 3.1.2 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 3.1.3 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]

To install additional .NET Core runtimes or SDKs:
https://aka.ms/dotnet-download

Visual Studio Code Extensions

Extension	Author	Version
csharp	ms-dotnettools	1.21.16
debugger-for-chrome	msjsdiag	4.12.6
dotnetscriptr	Wivuu	0.2.3
gc-excelviewer	GrapeCity	2.1.34
gitlens	eamodio	10.2.1
html-slim-scss-css-class-completion	gencer	1.5.23
lorem-ipsum	Tyriar	1.2.0
markdown-all-in-one	yzhang	2.7.0
markdown-pdf	yzane	1.4.4
monitor-file	rkostrzewski	1.0.1
mssql	ms-mssql	1.9.0
nunjucks-template	eseom	0.2.1
powershell	ms-vscode	2020.3.0
python	ms-python	2020.3.71659
quicktype	quicktype	12.0.46
remote-wsl	ms-vscode-remote	0.42.4
render-crlf	medo64	1.5.1
scss-refactoring	lukazakrajsek	0.1.4
sftp	liximomo	1.12.9
smarty	imperez	0.3.0
swig	zhutian	0.0.5
theme-sapphire	Tyriar	0.9.1
vs-code-xml-format	fabianlauer	0.1.5
vs-html-to-css	neptunedesign	1.0.0
vscode-auto-scroll	pejmannikram	1.0.3
vscode-autohotkey	slevesque	0.2.2
vscode-css-formatter	aeschli	1.0.1
vscode-docker	ms-azuretools	1.0.0
vscode-file-peek	abierbaum	1.0.1
vscode-great-icons	emmanuelbeziat	2.1.47
vscode-scss	mrmlnc	0.9.0
vscode-scss-formatter	sibiraj-s	2.0.0
vscodeintellicode	VisualStudioExptTeam	1.2.6

[cartermp]

Tagging for needing investigation - there is a legal matter to design an experience around here, since VSCode/C# doesn't require a EULA in the same way as VSWindows (where you don't see this banner).

[shivshanks]

I agree with the original poster and in fact I would argue that it should not show this after the very first time as it is running in VS Code which is a valid use case. I am even willing to go through some config (which I can set), that then triggers an EULA at next run to click and agree to make this go away.

The way it is right now, almost makes me want to stop using VS Code for C#.