fix: improve getRudderContext api return type

[1abhishekpandey]

Description of the change

• Added the IRudderContext interface in the React Native SDK, which basically defines the context fields. Now this interface is also exported.
• Change the getRudderContext API return type from void to IRudderContext | null.
• Updated the sample app to use this API.
• Also, added GDPR API in the sample app.

Type of change

• Bug fix (non-breaking change that fixes an issue)
• New feature (non-breaking change that adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

Related issues

Fix #263

Checklists

Development

• Lint rules pass locally
• The code changed/added as part of this pull request has been covered with tests
• All tests related to the changed code pass in development

Code review

• This pull request has a descriptive title and information useful to a reviewer. There may be a screenshot or screencast attached
• "Ready for review" label attached to the PR and reviewers mentioned in a comment
• Changes have been reviewed by at least one other engineer
• Issue from task tracker has a link to this pull request

[sonarcloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

0.0% Coverage
0.0% Duplication

[elliotdickison]

@1abhishekpandey Was this merged? If so could you remove it? We would prefer not to have anything logged when fetching context.

UPDATE: this comment was supposed to reference the new console.log statement but the GitHub mobile UI threw me off haha

[1abhishekpandey]

Hey @elliotdickison,
Just to clarify, the change is merged, and the console.log statement was added to the sample app, not the SDK. I hope this addresses your concern.

[elliotdickison]

Ah I missed that, thanks!