impr: small usability improvements

[endre-seqera]

Small improvements and follow-ups to the cli:

1. when creating a new DataStudio validate the template that is provided:

➜ ./gradlew run -q --args="--insecure studios add -n my-studi4 -w 22117901918827 -t wrong-template-vscode -c 2rZkbXfTkiJxTVz18OJs3i"

 ERROR: DataStudio template 'wrong-template-vscode' is not one of available templates 
 '[cr.seqera.io/public/data-studio-jupyter:4.2.5-snapshot, cr.seqera.io/public/data-studio-rstudio:4.4.1-u1-snapshot, cr.seqera.io/public/data-studio-vscode:1.93.1-snapshot, cr.seqera.io/public/data-studio-xpra:6.2.0-r2-1-snapshot]'

2. when starting as new, allow for parent data studio name to be specified, not just ID:

➜ ./gradlew run -q --args="--insecure studios start-as-new -pn studio-that-was-never-started -n my-child-studio -w 22117901918827"

  Data Studio 57a05dda CREATED at [aaa / bbb] workspace.

3. when a studio is created with autostart, show the studio in the:

➜ ./gradlew run -q --args="--insecure studios add -n my-studi4 -w 22117901918827 -t cr.seqera.io/public/data-studio-jupyter:4.2.5-snapshot -c 2rZkbXfTkiJxTVz18OJs3i -a"

  Data Studio 720ad0ca CREATED at [aaa / bbb] workspace and auto started.

    http://localhost:8000//orgs/aaa/workspaces/bbb/studios/720ad0ca/connect

➜ ./gradlew run -q --args="--insecure studios start-as-new -pn studio-that-was-never-started -n my-child-studio-2 -w 22117901918827 -a"                               

  Data Studio 39b8c805 CREATED at [aaa / bbb] workspace and auto started.

    http://localhost:8000//orgs/aaa/workspaces/bbb/studios/39b8c805/connect