chore(specs): refactor code deployment functions

[SamWilsn]

🗒️ Description

Combines account_has_code_or_nonce and account_has_storage into a single function, account_deployable.

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[codecov]

Codecov Report

❌ Patch coverage is 64.10256% with 42 lines in your changes missing coverage. Please review.
✅ Project coverage is 90.36%. Comparing base (810c184) to head (f69d017).

Files with missing lines	Patch %	Lines
src/ethereum/forks/berlin/state_tracker.py	33.33%	2 Missing and 2 partials ⚠️
src/ethereum/forks/byzantium/state_tracker.py	33.33%	2 Missing and 2 partials ⚠️
src/ethereum/forks/constantinople/state_tracker.py	33.33%	2 Missing and 2 partials ⚠️
src/ethereum/forks/frontier/state_tracker.py	33.33%	2 Missing and 2 partials ⚠️
src/ethereum/forks/homestead/state_tracker.py	33.33%	2 Missing and 2 partials ⚠️
src/ethereum/forks/istanbul/state_tracker.py	33.33%	2 Missing and 2 partials ⚠️
src/ethereum/forks/london/state_tracker.py	33.33%	2 Missing and 2 partials ⚠️
...rc/ethereum/forks/berlin/vm/instructions/system.py	0.00%	0 Missing and 1 partial ⚠️
src/ethereum/forks/berlin/vm/interpreter.py	50.00%	0 Missing and 1 partial ⚠️
...ethereum/forks/byzantium/vm/instructions/system.py	0.00%	0 Missing and 1 partial ⚠️
... and 11 more

Additional details and impacted files

@@                 Coverage Diff                 @@
##           forks/amsterdam    #2904      +/-   ##
===================================================
- Coverage            90.44%   90.36%   -0.08%     
===================================================
  Files                  535      535              
  Lines                32439    32478      +39     
  Branches              3012     3038      +26     
===================================================
+ Hits                 29338    29349      +11     
- Misses                2573     2587      +14     
- Partials               528      542      +14     

Flag	Coverage Δ
unittests	90.36% <64.10%> (-0.08%)	⬇️

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