[AspireE2E] 'aspire new' doesn't support 'aspire new list'.

[v-elenafeng]

INSTALL STEPS

• Clean machine: Win11 x64 24h2 ENU
• Install SDK 9.0.203
• Add the dotnet9 feed for 9.3.0-preview.1
• Install Aspire.CLI
  • dotnet tool install --global aspire.cli --version 9.3.0-preview.1.25224.9

REPRO STEPS

1. Open a command prompt, run 'aspire new list' and 'aspire new -h'

ACTUAL

'aspire new list' is not a supported command for the 'aspire new' scenario.

EXPECTED

Should we support 'aspire new list' to list available Aspire templates, just like the 'dotnet new list' does?

[davidfowl]

This is a feature request, moving to backlog.