create third game (find gcd) + update README

Author: yng-trouble

README.md

@@ -9,4 +9,6 @@
 ### Проверка на чётность:
 https://asciinema.org/a/RU20yG13Q6wnc3rBlGPP4TvQp
 ### Калькулятор:
-https://asciinema.org/a/rrCLAcJmNC8kIcPjqPBSguEzV
+https://asciinema.org/a/rrCLAcJmNC8kIcPjqPBSguEzV\
+### Наибольший общий делитель:
+https://asciinema.org/a/44jZUa9TwqOJqSyqLhI0N1oP1

brain_games/games/b_gcd_logic.py

@@ -0,0 +1,34 @@
+from random import randint
+
+import brain_games.engine as ngin
+
+import prompt
+
+
+def b_gcd():
+    a = randint(0, 20)
+    b = randint(0, 20)
+    gcd = 'something'
+    numbers = [a, b]
+    print('Find the greatest common divisor of given numbers.')
+    while ngin.counter < 3:
+        gcd_question = print(f'Question: {a} {b}')
+        answer = input('Your answer: ')
+        while b != 0:
+            if max(numbers) % min(numbers) == 0:
+                gcd = min(numbers)
+            rem = a % b
+            a = b
+            b = rem
+            
+            if b == 0:
+                gcd = a
+        if answer == str(gcd):
+            print('Correct')
+            a = randint(0, 20)
+            b = randint(0, 20) 
+            ngin.counter += 1
+        else:
+            print(f"{answer} is wrong answer ;(. Correct answer was {gcd}. Let's try again, {ngin.name}")
+            quit()
+

brain_games/scripts/brain_even.py

@@ -1,10 +1,10 @@
-import brain_games.engine as engine
+from brain_games.engine import run
 
 from brain_games.games.b_even_logic import b_even
 
 
 def main():
-    engine.run(b_even)
+    run(b_even)
 
 
 if __name__ == "__main__":

brain_games/scripts/brain_gcd.py

@@ -0,0 +1,11 @@
+from brain_games.engine import run
+
+from brain_games.games.b_gcd_logic import b_gcd
+
+
+def main():
+    run(b_gcd)
+
+
+if __name__ == "__main__":
+    main()

pyproject.toml

@@ -23,4 +23,5 @@ dev = [
 [project.scripts]
 brain-games = "brain_games.scripts.brain_games:main"
 brain-even = "brain_games.scripts.brain_even:main"
-brain-calc = "brain_games.scripts.brain_calc:main"
+brain-calc = "brain_games.scripts.brain_calc:main"
+brain-gcd = "brain_games.scripts.brain_gcd:main"