Add core modules (session, recorder, database)

.termflow/__init__.py

@@ -0,0 +1,14 @@
+__version__ = "0.1.0"
+__author__ = "Term Flow Team"
+
+from .core.session import Session, Command
+from .core.recorder import SessionRecorder
+from .core.database import SessionDatabase
+
+__all__ = [
+    "__version__",
+    "Session",
+    "Command",
+    "SessionRecorder",
+    "SessionDatabase",
+]