Implement `AccountManager` interface

[aorumbayev]

Description

The goal is to ensure complete feature parity between algokit-utils-ts and algokit-utils-py. AccountManager interface and its public methods/properties/vars on utils-py must match the utils-ts implementation within the bounds of python best practices.

Technical Details

Acceptance Criteria

• AccountManager interface on algokit-utils-py is implemented and has full feature parity with algokit-utils-ts

Tasks

• - Implement AccountManager
• - Implement MultiSigAccount
• - Implement KmdAccountManager
• - Ensure get_information reponse in AccountManager is typed

[aorumbayev]

Implemented as part of #119 and follow up beta patch PRs. Outcome itself is to be closed after prod release of utils-v3