Implement async API for ODataUtf8JsonWriter

[habbes]

Issues

*This pull request fixes #2421

Description

Add IJsonWriterAsync implementation to ODataUtf8JsonWriter.

Checklist (Uncheck if it is not completed)

• Test cases added
• Build and test with one-click build and test script passed

Additional work necessary

If documentation update is needed, please add "Docs Needed" label to the issue and provide details about the required document change in the issue.

[pull-request-quantifier-deprecated]

This PR has 2542 quantified lines of changes. In general, a change size of upto 200 lines is ideal for the best PR experience!

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Quantification details

Label      : Extra Large
Size       : +2266 -276
Percentile : 100%

Total files changed: 69

Change summary by file extension:
.md : +322 -8
.yml : +73 -5
.cs : +1772 -250
.csproj : +63 -13
.txt : +2 -0
.sln : +0 -0
.json : +31 -0
.bsl : +3 -0

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[habbes]

Closing this PR due to rebase conflicts. Replaced by #2466