Support experimental Detekt type resolution

[Bencodes]

#92

[Bencodes]

Tested this against our repository. Will need to do some more testing but this seems to work except for the unused import check, which seems to just be flagging all imports as unused when type resolution is enabled.

[uKetki]

This is great, @Bencodes! We (At Uber) are also looking for similar support. Are there any timelines to merge the changes?

[Bencodes]

This should be ready to merge but we found that some of the checks that we rely on right now aren't working with type resolution enabled, which might cause some confusion when opting in to this.

@arturdryomov any thoughts on when might be the best time to merge this? We can cut a new release but include a disclaimer about experimental_type_resolution no being stable until the next major Detekt release.

[arturdryomov]

@Bencodes, are we talking about built-in checks or internal custom ones? Is there an upstream Detekt issue we can track?