Implement re-designed Wasmi select instructions

[Robbepop]

This simplifies integration of #1152.

[codecov]

Codecov Report

Attention: Patch coverage is 73.66548% with 74 lines in your changes missing coverage. Please review.

Project coverage is 79.62%. Comparing base (23971c1) to head (1885192).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
crates/wasmi/src/engine/executor/instrs/select.rs	33.96%	35 Missing ⚠️
crates/wasmi/src/engine/translator/mod.rs	90.97%	12 Missing ⚠️
crates/wasmi/src/engine/executor/instrs.rs	33.33%	10 Missing ⚠️
...ates/wasmi/src/engine/translator/visit_register.rs	18.18%	9 Missing ⚠️
...rates/wasmi/src/engine/translator/relink_result.rs	20.00%	8 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1157      +/-   ##
==========================================
- Coverage   79.66%   79.62%   -0.04%     
==========================================
  Files         296      296              
  Lines       25491    25533      +42     
==========================================
+ Hits        20307    20331      +24     
- Misses       5184     5202      +18     

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