Add Rootstock testnet and mainnet network support

[kaushalrajbacancy]

Description

• Added Rootstock testnet and mainnet network support
• Have changed some variables to camelCase

Types of changes

What types of changes does your code introduce?

• [ ] Bugfix (non-breaking change which fixes an issue)
• [x] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [ ] Documentation Update
• [ ] Code style update (formatting, renaming)
• [ ] Refactoring (no functional changes, no api changes)
• [ ] Build related changes
• [ ] Other (please describe):

Further comments (optional)

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[linear[bot]]

PRO-2193 PrimeSDK to support Rootstock mainnet and testnet