lib: starkli as lib

[ICavlek]

With this PR, updates on starkli in general and couple of features are introduced. Inside beerus, it is being used as part of the test case which simulates whole starknet environment and uses all of it's major tools: starkli, katana, scarb and beerus. List of the commits this PR consists of:

• starkli as lib - possibility to include starkli as a library
• flag to persist logger - multiple initializations of logger are not allowed, therefore possibility to skip it when calling multiple functions from starkli as library
• flag for skipping prompt in account deploy - it has been marked as TODO and it won't block the test case
• call subfunction - extracted functionality from call to a separate function which returns Vec<Felt> that can be verified in test case