[Cosmos] Computed properties support

[balalakshmin]

Description

Adding computed properties support in CosmosContainerProperties.
Corresponding .Net PR

Usage

        List<ComputedProperty> computedProperties = new ArrayList<>(
            Arrays.asList(
                new ComputedProperty("lowerName", "SELECT VALUE LOWER(IS_DEFINED(c.lastName) ? c.lastName : c.parents[0].familyName) FROM c"),
                new ComputedProperty("upperName", "SELECT VALUE UPPER(IS_DEFINED(c.lastName) ? c.lastName : c.parents[0].familyName) FROM c")
            )
        );

        containerProperties.setComputedProperties(computedProperties);
        CosmosContainerResponse containerResponse = createdDatabase.createContainer(containerProperties);

All SDK Contribution checklist:

• The pull request does not introduce [breaking changes]
• CHANGELOG is updated for new features, bug fixes or other significant changes.
• I have read the contribution guidelines.

Testing Guidelines

• Pull request includes test coverage for the included changes.

[azure-sdk]

API change check

APIView has identified API level changes in this PR and created following API reviews.

azure-cosmos

[FabianMeiswinkel]

Mostly blocking in the probably incomplete JsonSerializable implementation.

[FabianMeiswinkel]

LGTM now...

[kushagraThapar]

Thanks for the changes @balalakshmin, they look great.

One new process that we are starting now is to make sure that every feature PR also adds samples / documentation about the feature.

For this one, I think we should add the code snippet about this feature, in the samples folder, and then reference those code snippets in the java docs on these APIs.

You can see the example of throughput control / change feed processor, also this sample PR will show you how / where to add the code snippets - #35300

[xinlian12]

LGTM, thanks

[balalakshmin]

/azp run java - cosmos - tests

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).

[kushagraThapar]

LGTM, thanks @balalakshmin !

[kushagraThapar]

missing new file license header. Can be added later on after CI finishes.

[kushagraThapar]

/azp run java - cosmos - tests

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).