add application-base init commands

[schmunk42]

What steps will reproduce the problem?

Install a project template, people complaining about too complicated setup.

What is the expected result?

Example commands

$ yii init
Querying application bases...
[1] yii-base-web
[2] yii-base-api
[3] yii-base-cli
Which one(s) do you want to install?

What do you get instead?

Copy and paste command from docs.

[samdark]

I'm against having init command. While it's better than copy-pasting, it still is more complicated than what was done by @hiqsol initially: one composer command to install it and then another to start a web server.

[schmunk42]

I am against having a web-application installed by default, primarily based on the discussion in yiisoft/yii-base-api#1 and the comments from @roslov and @rob006

An init command could be attached to the post-create-project hook of composer and detect if npm and or yarn is available. If so I'd suggest to offer this as the primary asset-management with foxy, if not the only option is to use asset-packagist.

[samdark]

What if web application won't install any external assets?

[schmunk42]

That would simplify things a lot!

[samdark]

Let's close this one then. If it will be still too complicated, we'll add some commands.