Create problem_54 in project Euler (#2451)

* Add solution and test files for project euler 54

* Update sol1.py

* updating DIRECTORY.md

* Fix: use proper path to open files

* Commit suggestions:

- Use list comprehension instead of map
- Sort imports using isort

* Changes made as suggested (simplified a lot):

- List and set comprehension instead of itemgetter
- Using enumerate as it's easy to read
- Divided into list of card values and set of card suit as set will
  remove all the duplicate values. So, no need for double indexing.
- Add test for testing multiple calls to five_high_straight function

* Add suggestions and simplified:

- Split generate_random_hands function into two:
  - First will generate a random hand
  - Second, which will be called, will return a generator object

Co-authored-by: github-actions <${GITHUB_ACTOR}@users.noreply.github.com>

Author: dhruvmanila

Diff for: DIRECTORY.md

@@ -86,6 +86,7 @@
 
 ## Conversions
   * [Binary To Decimal](https://github.com/TheAlgorithms/Python/blob/master/conversions/binary_to_decimal.py)
+  * [Binary To Octal](https://github.com/TheAlgorithms/Python/blob/master/conversions/binary_to_octal.py)
   * [Decimal To Any](https://github.com/TheAlgorithms/Python/blob/master/conversions/decimal_to_any.py)
   * [Decimal To Binary](https://github.com/TheAlgorithms/Python/blob/master/conversions/decimal_to_binary.py)
   * [Decimal To Hexadecimal](https://github.com/TheAlgorithms/Python/blob/master/conversions/decimal_to_hexadecimal.py)
@@ -628,6 +629,9 @@
     * [Sol1](https://github.com/TheAlgorithms/Python/blob/master/project_euler/problem_52/sol1.py)
   * Problem 53
     * [Sol1](https://github.com/TheAlgorithms/Python/blob/master/project_euler/problem_53/sol1.py)
+  * Problem 54
+    * [Sol1](https://github.com/TheAlgorithms/Python/blob/master/project_euler/problem_54/sol1.py)
+    * [Test Poker Hand](https://github.com/TheAlgorithms/Python/blob/master/project_euler/problem_54/test_poker_hand.py)
   * Problem 55
     * [Sol1](https://github.com/TheAlgorithms/Python/blob/master/project_euler/problem_55/sol1.py)
   * Problem 551