feat: add HTS foundry scripts

[acuarica]

Description:

This PR fixes the association methods to not revert when the provided address does not belong to an existing Hedera account. Scripts are included so the behavior can be validated against a real network.

Important

Contracts are also added into the script folder, because haveing a src folder in the example causes the remappings in the user's project to fail.

Related issue(s):

Fixes #292.

Notes for reviewer:

Checklist

• Documented (Code comments, README, etc.)
• Tested (unit, integration, etc.)

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 89.37%. Comparing base (14478fc) to head (29c71a9).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #291   +/-   ##
=======================================
  Coverage   89.37%   89.37%           
=======================================
  Files          23       23           
  Lines        2372     2372           
  Branches      213      213           
=======================================
  Hits         2120     2120           
  Misses        194      194           
  Partials       58       58           

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[quiet-node]

LGTM