feat: tag var type is continuable expression

[DylanPiercey]

Description

Improves support for adding types to tag variables by treating the tag variable as a continuable expression.

Checklist:

• I have updated/added documentation affected by my changes.
• I have added tests to cover my changes.

[changeset-bot]

🦋 Changeset detected

Latest commit: 19ac8e2

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

This PR includes changesets to release 1 package

Name	Type
htmljs-parser	Patch

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[codecov]

Codecov Report

Merging #101 (19ac8e2) into main (01ed0a4) will decrease coverage by 0.27%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main     #101      +/-   ##
==========================================
- Coverage   94.51%   94.23%   -0.28%     
==========================================
  Files          26       26              
  Lines        1058     1059       +1     
  Branches      251      252       +1     
==========================================
- Hits         1000      998       -2     
- Misses         38       41       +3     
  Partials       20       20              

Impacted Files	Coverage Δ
src/states/EXPRESSION.ts	90.32% <100.00%> (ø)
src/states/OPEN_TAG.ts	95.83% <100.00%> (-0.58%)	⬇️
src/core/Parser.ts	92.53% <0.00%> (-1.50%)	⬇️

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