feat(utils): add migrate methods to TestNode

[kariy]

Adds migrate_spawn_and_move() and migrate_simple() methods to TestNode for bootstrapping the blockchain's state.

[codecov]

Codecov Report

❌ Patch coverage is 0% with 88 lines in your changes missing coverage. Please review.
✅ Project coverage is 68.24%. Comparing base (9bde0ae) to head (94eccf8).
⚠️ Report is 242 commits behind head on main.

Files with missing lines	Patch %	Lines
crates/utils/src/node.rs	0.00%	88 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #412      +/-   ##
==========================================
- Coverage   73.32%   68.24%   -5.08%     
==========================================
  Files         209      266      +57     
  Lines       23132    31866    +8734     
==========================================
+ Hits        16961    21748    +4787     
- Misses       6171    10118    +3947     

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