feat: Add support for table alias when injecting ONLY clause

[buntine]

First of all, great library. We've just recently been using it in production and are really enjoying it.

One thing I've noticed is that Hoardable is not correctly injecting the ONLY clause when using a table alias.

For example - using the test DB schema as an example:

has_one :bio, class_name: "Profile"

When building a query using this alias, the ArelVisitors monkey patch is silently ignoring it because o.left is a table alias, which needs to be recursed into.

Anyway, here is a PR to fix that so Hoardable can properly support using aliases. 👍

[waymondo]

nice addition 👍 mind bumping the version to 0.15.1 as well?

[waymondo]

also, please run rake write to auto-format the files with stree to appease CI

[buntine]

Thanks! Hopefully all good now 👍 I've bumped to v0.15.1 and fixed the linting.

[waymondo]

thanks again for this!