Body parser limit

[LoicPoullain]

Issue

Fixes #596

Solution and steps

• Add a configuration key to increase the maximum of the request body size.

Checklist

• Add/update/check docs (code comments and docs/ folder).
• Add/update/check tests.
• Update/check the cli generators.

[codecov]

Codecov Report

Merging #597 into v1-4-0 will increase coverage by 0.06%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           v1-4-0     #597      +/-   ##
==========================================
+ Coverage   99.57%   99.63%   +0.06%     
==========================================
  Files          88       88              
  Lines        1635     1636       +1     
  Branches      374      374              
==========================================
+ Hits         1628     1630       +2     
+ Misses          7        6       -1

Impacted Files	Coverage Δ
packages/core/src/express/create-app.ts	100% <100%> (+1.16%)	⬆️

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