added packager helper

src/helpers/packager.nim

@@ -0,0 +1,36 @@
+#=======================================================
+# Arturo
+# Programming Language + Bytecode VM compiler
+# (c) 2019-2023 Yanis Zafirópulos
+#
+# @file: helpers/packager.nim
+#=======================================================
+
+#=======================================
+# Libraries
+#=======================================
+
+# import algorithm, bitops, std/math, sequtils, sugar
+
+# when defined(WEB):
+#     import std/jsbigints
+# elif not defined(NOGMP):
+#     import helpers/bignums as BignumsHelper
+
+# when defined(NOGMP):
+#     import vm/errors
+
+# import vm/values/value
+
+#=======================================
+# Methods
+#=======================================
+
+# func addmod*[T: SomeInteger](a, b, modulus: T): T =
+#     let a_m = if a < modulus: a else: a mod modulus
+#     if b == 0.T: return a_m
+#     let b_m = if b < modulus: b else: b mod modulus
+
+#     let b_from_m = modulus - b_m
+#     if a_m >= b_from_m: return a_m - b_from_m
+#     return a_m + b_m