refactor: improve readability of symbol table

Make the symbol table produced by the memory mapping script more
readable. Add a generic interface for interacting with ELF binaries.
This interface enables us to get symbols that provide some insights into
TF-A's memory usage.

Change-Id: I6646f817a1d38d6184b837b78039b7465a533c5c
Signed-off-by: Harrison Mutai <harrison.mutai@arm.com>
diff --git a/tools/memory/__init__.py b/tools/memory/__init__.py
new file mode 100644
index 0000000..0b4c8d3
--- /dev/null
+++ b/tools/memory/__init__.py
@@ -0,0 +1,7 @@
+#!/usr/bin/env python3
+
+#
+# Copyright (c) 2023, Arm Limited. All rights reserved.
+#
+# SPDX-License-Identifier: BSD-3-Clause
+#