Perform BB analysis from Architecture C++ API

This commit moves AnalyzeBasicBlocks from the binary ninja core to the
API and allows architecture plugins to optionally override
AnalyzeBasicBlocks for a custom implementation

Supply ABB inputs in BNBasicBlockAnalysisContext

Register default analyze basic blocks callback

This allows the nanomips and rust core architecture plugins to work
again while using the C++ API DefaultAnalyzeBasicBlocks

Use default ABB from Python plugins

Fix bug in API ArchAndAddr operator overload

Python APIs for basic block analysis