feat: update streaming dependencies to support react-native

[AllanZhengYP]

UPDATE: This PR update the dependency packages that uses API's not exist in ReactNative.

1. chunked-blob-reader-rn: Equivalents to chunked-blob-reader package in browser except that it uses FileReader.readAsDataURL() instead of FileReader.readAsArrayBuffer(). The later one is not implemented in RN (code)
2. stream-collector-rn: Equivalents to stream-collector-browser package in browser except not using FileReader.readAsArrayBuffer().
3. fetch-http-handler: Add bufferBody config to the constructor. If it's set to true, the fetch-http-handler will buffer the whole response before returning. Hence, the returned Response.body will be a Blob shape instead of ReadableStream in browsers normally. So response streaming is not available in RN. When the option is set, fetch-http-handler uses Body.blob() under the hood to buffer the response.

This PR is tested with CognitoIdentity.GetId, S3.putObject, S3.deleteObject, S3.deleteObjects, S3.listObjects.

Resolves: #881 #874

This is a POC of adding RN support to SDK. Only tested with S3.listObjects. before setting up the local test environment, you need to manually publish all the relacted V3 SDK packages to a local npm server.

Test repo: https://github.com/AllanFly120/RNTestJSSDK

Screen Shot:

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[codecov-io]

Codecov Report

Merging #895 into smithy-codegen will increase coverage by 0.03%.
The diff coverage is 96%.

@@                Coverage Diff                 @@
##           smithy-codegen     #895      +/-   ##
==================================================
+ Coverage           92.15%   92.18%   +0.03%     
==================================================
  Files                 148      149       +1     
  Lines                2905     2930      +25     
  Branches              513      516       +3     
==================================================
+ Hits                 2677     2701      +24     
- Misses                228      229       +1

Impacted Files	Coverage Δ
packages/chunked-blob-reader-rn/src/index.ts	100% <100%> (ø)
...kages/fetch-http-handler/src/fetch-http-handler.ts	95.45% <50%> (-2.17%)	⬇️

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[AllanZhengYP]

Found an issue: the ETag on the wire is like
<ETag>&quot;841a2d689ad86bd1611447453c22c6fc&quot;</ETag>
In the v2, it is parsed into:
\"841a2d689ad86bd1611447453c22c6fc\"
In the v3 browser, it is parsed into:
"841a2d689ad86bd1611447453c22c6fc"
In the v3 ReactNative, it is parsed into:
"841a2d689ad86bd1611447453c22c6fc"

Need to dive deep on where do these discrepencies come from.

UPDATE: v3 browser is actually parsed same to v3 ReactNative:
"841a2d689ad86bd1611447453c22c6fc"
But it's still different to V2 behavior

[aws-sdk-js-automation]

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[aws-sdk-js-automation]

AWS CodeBuild CI Report

• Result: SUCCEEDED
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