feat[venom]: support opt-level & fine grained venom pass disabling flags

[harkal]

What I did

This PR adds new style optimisation level selection parameters and fine grained venom passes selection. Together, these changes give advanced users fine‑grained control over the Venom optimizer from both the CLI and JSON interfaces while preserving backward‑compatible behaviour for existing --optimize flags.

How I did it

How to verify it

Commit message

adds new style optimisation level selection parameters and fine grained 
venom passes selection. Together, these changes give advanced users 
fine‑grained control over the Venom optimizer from both the CLI and 
JSON interfaces while preserving backward‑compatible behaviour for 
existing `--optimize` flags.

Description for the changelog

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[codecov]

Codecov Report

❌ Patch coverage is 82.87037% with 37 lines in your changes missing coverage. Please review.
✅ Project coverage is 93.20%. Comparing base (ae020c0) to head (9354bc4).

Files with missing lines	Patch %	Lines
vyper/cli/vyper_json.py	26.31%	11 Missing and 3 partials ⚠️
vyper/cli/vyper_compile.py	55.55%	9 Missing and 3 partials ⚠️
vyper/compiler/settings.py	95.69%	1 Missing and 3 partials ⚠️
vyper/cli/venom_main.py	0.00%	3 Missing ⚠️
vyper/venom/__init__.py	92.30%	1 Missing and 2 partials ⚠️
vyper/venom/ir_node_to_venom.py	50.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #4757      +/-   ##
==========================================
- Coverage   93.29%   93.20%   -0.09%     
==========================================
  Files         140      145       +5     
  Lines       20277    20384     +107     
  Branches     3554     3585      +31     
==========================================
+ Hits        18917    18999      +82     
- Misses        912      929      +17     
- Partials      448      456       +8     

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