[`flake8-gettext`] Resolve qualified names and built-in bindings (`INT001`, `INT002`, `INT003`) (#19045)
## Summary
Make rules `INT001`, `INT002`, and `INT003` also
* trigger on qualified names when we're sure the calls are calls to the
`gettext` module. For example
```python
from gettext import gettext as foo
foo(f"{'bar'}") # very certain that this is a call to a real `gettext`
function => worth linting
```
* trigger on `builtins` bindings
```python
from builtins, gettext
gettext.install("...") # binds `gettext.gettext` to `builtins._`
builtins.__dict__["_"] = ... # also a common pattern
_(f"{'bar'}") # should therefore also be linted
```
Fixes: https://github.com/astral-sh/ruff/issues/19028
## Test Plan
Tests have been added to all three rules.
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Co-authored-by: Brent Westbrook <36778786+ntBre@users.noreply.github.com>