Reconsider usage of get_env for log_options

[cpiemontese]

Right now we allow configuring :log_options from the environment (see here).

This should be avoided since it could lead to conflicts i.e. dependency & library using bridge_ex and overriding their configurations (see here for details).

This feature was allowed to let users configure logs only once for each environment and each bridge, but it could be a footgun.

[LeartS]

Definitely agreed. It makes it impossible for example to use bridge_ex in an umbrella app where the different subapps want to use different options.

[cpiemontese]

I looked into it again: as of now, log_options can be configured both through the environment and locally during use.

If in an umbrella app, no sub-apps configure it using the environment, is it still impossible to use the library, or would that be a "workaround" (i.e. avoiding the foot gun)?

[LeartS]

I did not try but that should work. Thanks!

[cpiemontese]

Ok, let us know! In any case we'll at the very least deprecate the "global" config and eventually remove it