Financial Data OpenCTI Module support to Client Python

[ParamConstructor]

Proposed changes

This is the PYCTI changes required to support the OpenCTI PR - OpenCTI-Platform/opencti#5287

• Add new observables: Financial Accounts, Financial Assets, and Financial Transactions
• Add new vocabularies: financial_account_status, financial_account_type, asset_type, currency_code
• Removed BankAccount and CryptoWallet observables (migrated to Financial Account in OpenCTI)
• Add relation support for new observables

Related issues

• This needs to be deployed in tandem with the OpenCTI PR
• We have tested locally using unit tests / pytest locally - but the automated pipeline has not been used due to it checking out "master" on OpenCTI branch versus the equivalent "financial_data" branch

Checklist

• I consider the submitted work as finished
• I tested the code for its functionality
• I wrote test cases for the relevant uses case
• I added/update the relevant documentation (either on github or on notion)
• Where necessary I refactored code to improve the overall quality

Further comments

N/A