CLI-635: Various Abacus Wiring

Links (dYdX Internal Use Only)

support different rounding rules in extension rounding functions
adds wrappers for v4-client vault APIs and handler helper function for chain node responses
adds models for chain response objects and errors, ChainErrorResponse, ChainSuccessResponse
adds abacus helper extensions for KotlinInt, KotlinDouble, KotlinBool
adds convenience conversion method for DataLocalizer
renames earn tab to vault
integrates new vault data from abacus
integrates new v4-client APIs to make deposits/withdrawals
adds convenience init for PlatformIconViewModel which takes a URL and a placeholder text
fix radio button rendering to match designs

Before	After
loading state w/ slippage ack

[ ] Bug fix (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)
[ ] Refactoring or Technical Debt
[ ] Documentation update
[ ] Other (please describe: )