Complete core object properties

[tinysec]

Completes several stable core object APIs that were absent or indirectly reconstructed.

• add block instruction-data and LLIL indirect-branch flags
• add file display-name and binary-view read-only semantic properties
• expose enum-valued inline-during-analysis confidence with corrected setter ABI and compatibility translation
• use the direct owned current-object cursor API
• cover the surface with real-core external E2E tests (224/224 full suite)