feat: expose gql client to nitro

[Diizzayy]

This PR exposes gql clients to nitro, hence allowing for Gql Functions to be utilized in server routes and server middleware.

Closes #244

[codecov]

Codecov Report

Merging #258 (f300905) into main (237110a) will increase coverage by 1.13%.
The diff coverage is 94.04%.

@@            Coverage Diff             @@
##             main     #258      +/-   ##
==========================================
+ Coverage   91.50%   92.63%   +1.13%     
==========================================
  Files           6        6              
  Lines         553      611      +58     
  Branches      104      119      +15     
==========================================
+ Hits          506      566      +60     
+ Misses         46       44       -2     
  Partials        1        1              

Impacted Files	Coverage Δ
src/module.ts	88.00% <91.93%> (+2.23%)	⬆️
src/context.ts	98.48% <100.00%> (ø)
src/utils.ts	100.00% <100.00%> (ø)

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