refactor(gdb): refactor gdb script (#7123)

Signed-off-by: Benign X <1341398182@qq.com>
Co-authored-by: Neo Xu <neo.xu1990@gmail.com>

scripts/gdb/gdbinit.py

@@ -0,0 +1,13 @@
+import sys
+from os import path
+
+here = path.dirname(path.abspath(__file__))
+
+if __name__ == "__main__":
+    if here not in sys.path:
+        sys.path.insert(0, here)
+
+    for key in tuple(filter(lambda m: m.startswith("lvglgdb"), sys.modules.keys())):
+        del sys.modules[key]
+
+    import lvglgdb  # noqa: F401