Refactor BrainFuck interpreter to use a Registers class for state management; introduce Lua interpreter with basic structure and register handling.

src/lua/__lua.py

@@ -0,0 +1,16 @@
+from interpreter import Interpreter, Registers, opcode
+
+
+class LuaRegisters(Registers):
+    def __init__(self) -> None:
+        super().__init__()
+
+class LuaByteCodeInterpreter(Interpreter):
+    def __init__(self, bits=8, memsize=None) -> None:
+        super().__init__(bits, memsize)
+        self._registers = LuaRegisters()
+    
+    ...
+
+def lua():
+    ...