Support state migration for emulator state

[SupunS]

Closes onflow/cadence#3063

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For contributor use:

• Targeted PR against master branch
• Linked to GitHub issue with discussion and accepted design OR link to spec that describes this work
• Code follows the standards mentioned here
• Updated relevant documentation
• Re-reviewed Files changed in the GitHub PR explorer
• Added appropriate labels

[codecov-commenter]

Codecov Report

Attention: 56 lines in your changes are missing coverage. Please review.

Comparison is base (ce8332d) 53.01% compared to head (4bf481b) 53.35%.

Files	Patch %	Lines
storage/migration/cadence_values_migration.go	54.71%	17 Missing and 7 partials ⚠️
storage/migration/utils.go	65.51%	17 Missing and 3 partials ⚠️
storage/migration/system_contracts_migration.go	67.56%	8 Missing and 4 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #557      +/-   ##
==========================================
+ Coverage   53.01%   53.35%   +0.33%     
==========================================
  Files          29       32       +3     
  Lines        3876     4024     +148     
==========================================
+ Hits         2055     2147      +92     
- Misses       1668     1710      +42     
- Partials      153      167      +14     

Flag	Coverage Δ
unittests	53.35% <62.16%> (+0.33%)	⬆️

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[turbolent]

@SupunS I know you can't review your own PR, but could you please review the changes I made to the PR?

[SupunS]

@turbolent looks good! Nice cleanup by re-using/refactoring the pipeline at flow-go side!