Rename Project Euler directories and other dependent changes (#3300)

* Rename all Project Euler directories:

Reason:
The change was done to maintain consistency throughout the directory
and to keep all directories in sorted order.

Due to the above change, some config files had to be modified:
'problem_22` -> `problem_022`

* Update scripts to pad zeroes in PE directories

.github/workflows/codespell.yml

@@ -10,7 +10,7 @@ jobs:
       - uses: actions/setup-python@v2
       - run: pip install codespell
       - run: |
-          SKIP="./.*,./other/dictionary.txt,./other/words,./project_euler/problem_22/p022_names.txt"
+          SKIP="./.*,./other/dictionary.txt,./other/words,./project_euler/problem_022/p022_names.txt"
           codespell --ignore-words-list=ans,fo,followings,hist,iff,secant,som,tim --skip=$SKIP --quiet-level=2
       - name: Codespell comment
         if: ${{ failure() }}

.pre-commit-config.yaml

@@ -43,13 +43,13 @@ repos:
       - id: codespell
         args:
           - --ignore-words-list=ans,fo,followings,hist,iff,secant,som,tim
-          - --skip="./.*,./other/dictionary.txt,./other/words,./project_euler/problem_22/p022_names.txt"
+          - --skip="./.*,./other/dictionary.txt,./other/words,./project_euler/problem_022/p022_names.txt"
           - --quiet-level=2
         exclude: |
           (?x)^(
               other/dictionary.txt |
               other/words |
-              project_euler/problem_22/p022_names.txt
+              project_euler/problem_022/p022_names.txt
           )$
   - repo: local
     hooks: