yeoman-generator

See:
https://david-dm.org/angular-fullstack/angular-fullstack-deps/5.0.0
https://david-dm.org/angular-fullstack/angular-fullstack-deps/5.0.0?type=dev

Is your feature request related to a problem? Please describe.
Use of adaptive cards in the generated connector, new feature as of June 2020

Describe the solution you'd like
As above

Describe alternatives you've considered
There is no alternatives :-)

When a user would like to use yarn, it needs to be installed, even when --skip-install option is used.
I think this check could be moved to the actual install phase, simply throwing a warning like "Yarn is not installed, skipping install. Please install yarn on your machine." is enough.
What do you think, @HaNdTriX ?

One of the JHipster options is "API-First Development" (https://www.jhipster.tech/doing-api-first-development/) provides great benefits (mentioned in the link) and our team has been extensively using it for our java-based (micro)services.

Arguably, the most significant benefit is using this option enforces a team to really think well (and do so before writing code) about how exactly services ar