fix(logger): avoid mutating passed params

[piksel]

this fixes an old bug where the logger, when combined with other services would add the param message to other services Send() (which they usually don't like).

also added tests for this and for normal operation.

[codecov]

Codecov Report

Merging #184 (91e332b) into main (8018a47) will increase coverage by 0.07%.
The diff coverage is 85.71%.

@@            Coverage Diff             @@
##             main     #184      +/-   ##
==========================================
+ Coverage   63.58%   63.65%   +0.07%     
==========================================
  Files          84       86       +2     
  Lines        2694     2713      +19     
==========================================
+ Hits         1713     1727      +14     
- Misses        832      836       +4     
- Partials      149      150       +1     

Impacted Files	Coverage Δ
pkg/services/logger/logger.go	87.50% <85.71%> (ø)
pkg/services/logger/logger_config.go	0.00% <0.00%> (ø)

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