fix: file structure, made a bit of refactor

Builder/randomness.py

@@ -0,0 +1,40 @@
+import os, string
+
+def GetRandomBool() :
+    result = os.urandom(3)
+    r= sum(result) < 381.04
+    return r #average
+
+def GetRandomNumber() :
+    result = os.urandom(4)
+    return int(sum(result))
+
+def GetRandomRange(a, b):
+    if a > b:
+        a, b = b, a
+
+    range_size = b - a + 1
+
+    num_bits = 0
+    while 2 ** num_bits < range_size:
+        num_bits += 1
+
+    random_binary = [GetRandomBool() for _ in range(num_bits)]
+
+    random_integer = 0
+    for i, bit in enumerate(random_binary):
+        random_integer += bit * (2 ** i)
+
+    mapped_value = a + random_integer
+    if mapped_value > b : return GetRandomRange(a, b)
+    
+    return mapped_value
+
+def GetRandomString(l) :
+    letters = string.ascii_lowercase
+    s = ""
+    while len(s) < l :
+        r = GetRandomRange(0, len(letters)-1)
+        s += letters[r]
+
+    return s