Add the new 'Generate Launch Configurations' command to the list of commands in the userdocs

[tracymiranda]

Is your feature request related to a problem? Please describe.
There is a new 'Generate Launch Configurations' command in v2.4.0 but it is not listed in https://docs.swift.org/vscode/documentation/userdocs/commands

Describe the solution you'd like
Add the new command to the user docs https://docs.swift.org/vscode/documentation/userdocs/commands

Describe alternatives you've considered
None

Additional context
None