Implement Bulk Operations in WebAPI

[Sreejithpin]

Issues

Implements Bulk Operation in webAPI

Description

• Implements Bulk Operation
• Deserialization
• Patching
• Nested Patching
• DataModification Exception

Briefly describe the changes of this pull request.

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.

[Sreejithpin]

    internal IEdmTypeReference GetEdmType(object instance, Type type)

We can throw an exception if its null, which would change the current behaviour, but i guess thats fine right

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In reply to: 828778014

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Refers to: src/Microsoft.AspNet.OData.Shared/Formatter/Serialization/ODataSerializerContext.cs:290 in ab656df. [](commit_id = ab656df, deletion_comment = False)

[Sreejithpin]

    internal IEdmTypeReference GetEdmType(object instance, Type type)

we have a type mapping cache already right

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In reply to: 828777381

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Refers to: src/Microsoft.AspNet.OData.Shared/Formatter/Serialization/ODataSerializerContext.cs:290 in ab656df. [](commit_id = ab656df, deletion_comment = False)

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This PR has 3935 quantified lines of changes. In general, a change size of upto 200 lines is ideal for the best PR experience!

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Total files changed: 86

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.csproj : +48 -4
.config : +95 -84
.cs : +3111 -241
.resx : +18 -0
.projitems : +16 -0
.bsl : +294 -24

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