[FEATURE REQ] Generic core logging: add a check+error for `log(String.format`

[lmolkova]

By removing logger.info(String, String... params) we lost the ability to do logger.info("foo {}", bar)

It should be ok:

• logger.atInfo().addKeyValuePair("foo", "bar").log("important event about foo") is always better
• if we want to remove/reduce dependency on slf4j relying on specific lazy-formatting is not a good option

To warn/educate SDK devs we can add a stylecheck that detects string formatting in log method call.

[JonathanGiles]

@alzimmermsft / @lmolkova Could you please review this issue to see if it remains relevant (in the context of client-core v2).