TD Expansion Tool

[egekorkan]

Started work on the expansion tooling. Will update this description.

Notes:

• There is a bunch of eslint stuff happening that I would move to another PR before merging this

[codecov-commenter]

Codecov Report

❌ Patch coverage is 66.03774% with 36 lines in your changes missing coverage. Please review.
✅ Project coverage is 74.32%. Comparing base (0dd8275) to head (8649802).

Files with missing lines	Patch %	Lines
node/td-utils/src/expand.ts	65.38%	36 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #70      +/-   ##
==========================================
+ Coverage   69.33%   74.32%   +4.99%     
==========================================
  Files           1        4       +3     
  Lines         300      148     -152     
  Branches       79       43      -36     
==========================================
- Hits          208      110      -98     
+ Misses         70       38      -32     
+ Partials       22        0      -22     

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