Supporting multiple expressions for import-alias-naming

[denisvmedia]

In my initial PR about adding import-alias-naming we agreed to have only one expression. However, I'm now not able to easily solve the following limitation:

• allow all alphanumeric aliases with optional digits and have a length at least 1 symbol (i.e. ^[a-z][a-z0-9]*)
• disallow ^v\d+$ aliases (e.g. v1)
• disallow ^v\d+alpha\d+$ aliases (e.g. v1alpha1)

In my PR I assumed that golang supports negative lookahead. Unfortunately, my assumption was wrong (as well as there's no support for positive lookahead, also in regex there's no general support for logical AND). Do you think, we can revise our decision and allow multiple rules that will be combined by logical AND? @chavacava

I can submit a PR with an update (it will be backwards compatible).

[chavacava]

Some people, when confronted with a problem, think “I know, I'll use regular expressions.” Now they have two problems.

[denisvmedia]

That's true, but considering there's no way to address the issue, should I submit a new PR? 😉 P. S. I actually initially proposed multiple args 😊

[chavacava]

@denisvmedia a PR will be welcome. Thank you!