Add SDK utility for off-chain operations

.clang-format

@@ -0,0 +1,83 @@
+---
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CMakeLists.txt

@@ -16,7 +16,8 @@ add_library(mpt-crypto
             src/proof_pok_sk.c
             src/proof_same_plaintext.c
             src/proof_same_plaintext_multi.c
-            src/proof_same_plaintext_multi_shared_r.c)
+            src/proof_same_plaintext_multi_shared_r.c
+            src/utility/mpt_utility.cpp)
 
 # --- Set Include Directories ---
 target_include_directories(mpt-crypto PUBLIC include)
@@ -42,4 +43,4 @@ option(ENABLE_TESTS "Enable building tests" ON)
 if (ENABLE_TESTS)
     enable_testing()
     add_subdirectory(tests)
-endif ()
+endif ()