feat: add ws support

[czy88840616]

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

[gitpod-io]

[codecov-commenter]

Codecov Report

Merging #1058 (b3f1779) into 2.x (b0b3733) will decrease coverage by 0.96%.
The diff coverage is 80.81%.

@@            Coverage Diff             @@
##              2.x    #1058      +/-   ##
==========================================
- Coverage   86.54%   85.58%   -0.97%     
==========================================
  Files         183      217      +34     
  Lines        7432     8627    +1195     
  Branches     1458     1670     +212     
==========================================
+ Hits         6432     7383     +951     
- Misses        959     1187     +228     
- Partials       41       57      +16     

Impacted Files	Coverage Δ
packages-serverless/runtime-engine/src/engine.ts	95.91% <ø> (ø)
...ackages-serverless/runtime-engine/src/interface.ts	100.00% <ø> (ø)
...ckages-serverless/runtime-engine/src/lib/parser.ts	95.65% <ø> (ø)
packages-serverless/runtime-mock/src/runtime.ts	66.12% <ø> (ø)
packages-serverless/runtime-mock/src/trigger.ts	8.33% <0.00%> (-0.76%)	⬇️
packages-serverless/serverless-app/src/platform.ts	100.00% <ø> (ø)
...serverless/serverless-fc-trigger/src/apiGateway.ts	46.42% <0.00%> (-5.58%)	⬇️
...s-serverless/serverless-http-parser/src/context.ts	78.64% <0.00%> (-1.56%)	⬇️
...erverless/serverless-scf-trigger/src/apiGateway.ts	53.12% <0.00%> (-5.50%)	⬇️
packages/core/src/context/applicationContext.ts	95.36% <ø> (-0.12%)	⬇️
... and 157 more

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