feat: add string utility.

DeThunk/src/util/string.py

@@ -0,0 +1,18 @@
+"""
+String Utiltiy
+"""
+
+
+def startswith_m(con: str, *args) -> bool:
+    for arg in args:
+        if con.startswith(arg):
+            return True
+    return False
+
+
+def find_m(con: str, *args) -> int:
+    for arg in args:
+        pos = con.find(arg)
+        if pos != -1:
+            return pos, arg
+    return -1