Unify how module specifiers are visited by different declaration transformers

[Andarist]

Just a refactor PR, in preparation for the logic that will fix the issue with explicit .ts extensions (the one that we've discussed)

[changeset-bot]

🦋 Changeset detected

Latest commit: f00319c

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@preconstruct/cli	Patch

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[Andarist]

TODO: recheck this, I have a feeling that this had a bug (that is preserved by this PR) that skips over nested imports in nodes like this:

type Test = import('#foo').Foo<import('#bar').Bar>

[emmatown]

Hmmm, yeah, makes sense, I didn't realise that the qualifier and type arguments are children of the import type node. I expected it to be like how most ASTs represent property access, call expressions, etc.

[codecov]

Codecov Report

Patch coverage: 93.75% and project coverage change: +0.27 🎉

Comparison is base (6896664) 91.89% compared to head (3756352) 92.16%.

❗ Current head 3756352 differs from pull request most recent head f00319c. Consider uploading reports for the commit f00319c to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #554      +/-   ##
==========================================
+ Coverage   91.89%   92.16%   +0.27%     
==========================================
  Files          41       41              
  Lines        1998     1979      -19     
  Branches      586      584       -2     
==========================================
- Hits         1836     1824      -12     
+ Misses        152      145       -7     
  Partials       10       10              

Impacted Files	Coverage Δ
...eclarations/get-used-declaration-with-replacing.ts	92.85% <50.00%> (+7.67%)	⬆️
...c/rollup-plugins/typescript-declarations/common.ts	87.09% <100.00%> (+2.88%)	⬆️
...s/typescript-declarations/get-used-declarations.ts	100.00% <100.00%> (+3.84%)	⬆️

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