fix: improve metadata serialization

[s0nicboOm]

improve metadata serialization with orjson instead of torch serialization.

Method	Time Taken (1000 calls)
torch	70ms
json	2 ms
orjson	0.3 ms
ujson.	0.8 ms

[codecov]

Codecov Report

Merging #244 (99c9312) into main (8482c01) will decrease coverage by 0.14%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main     #244      +/-   ##
==========================================
- Coverage   96.45%   96.31%   -0.14%     
==========================================
  Files          53       53              
  Lines        2226     2227       +1     
  Branches      174      174              
==========================================
- Hits         2147     2145       -2     
- Misses         56       58       +2     
- Partials       23       24       +1     

Files Changed	Coverage Δ
numalogic/registry/redis_registry.py	97.69% <100.00%> (+0.01%)	⬆️

... and 1 file with indirect coverage changes

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[vigith]

rust, eh 😁