feat:pass other apollo server options.

[whlsxl]

Checklist

• npm test passes
• tests and/or benchmarks are included
• documentation is changed or added
• commit message follows commit guidelines

Affected core subsystem(s)

Description of change

[whlsxl]

添加了测试 #24

[codecov]

Codecov Report

Merging #31 into master will not change coverage.
The diff coverage is 100%.

@@          Coverage Diff          @@
##           master    #31   +/-   ##
=====================================
  Coverage     100%   100%           
=====================================
  Files           9      9           
  Lines         128    130    +2     
=====================================
+ Hits          128    130    +2

Impacted Files	Coverage Δ
app/middleware/graphql.js	100% <100%> (ø)	⬆️

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[whlsxl]

Any update?

[atian25]

ping @JasinYip

[JasinYip]

@whlsxl 已发布到 v2.7.0 🤩 https://www.npmjs.com/package/egg-graphql/v/2.7.0