Moshi pattern matching

[oameye]

try out moshi mathcing like SymbolicUtils internals. need to add benchmarks

it causes problems with JET running for quite long and false postives

[codecov]

Codecov Report

❌ Patch coverage is 88.57143% with 12 lines in your changes missing coverage. Please review.
✅ Project coverage is 82.15%. Comparing base (9a3ebac) to head (0e75ba0).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
src/Symbolics/Symbolics_utils.jl	86.95%	6 Missing ⚠️
src/Symbolics/exponentials.jl	85.71%	3 Missing ⚠️
src/Symbolics/fourier.jl	90.62%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #70      +/-   ##
==========================================
- Coverage   82.20%   82.15%   -0.05%     
==========================================
  Files          10       10              
  Lines         500      510      +10     
==========================================
+ Hits          411      419       +8     
- Misses         89       91       +2     

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