feat: node if, node start, node link

utils/link_name_generator.py

@@ -0,0 +1,12 @@
+def edge_title_generator(counter: int) -> str:
+    chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
+    num = (counter - 1) // len(chars) + 1
+    letter_index = (counter - 1) % len(chars)
+    return f"{chars[letter_index]}{num}"
+
+def edge_title_to_number(title: str) -> int:
+    chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
+    letter = title[0].upper()
+    number = int(title[1:])
+    letter_index = chars.index(letter)
+    return letter_index + 1 + (number - 1) * len(chars)