feat: add a MethodDecorator to wrap json function

[codecov[bot]]

Codecov Report

Merging #20 into developer will increase coverage by 0.05%. The diff coverage is 100%.

@@              Coverage Diff              @@
##           developer      #20      +/-   ##
=============================================
+ Coverage      96.38%   96.44%   +0.05%     
=============================================
  Files             26       26              
  Lines            609      618       +9     
  Branches          42       42              
=============================================
+ Hits             587      596       +9     
  Misses            17       17              
  Partials           5        5

Impacted Files	Coverage Δ
src/decorators/http_methods.ts	100% <100%> (ø)	:arrow_up:

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[himself65]

finished #21