[Snippets] Added tkinter snippet

[legopitstop]

Description

Added Tkinter snippet to python programming language.

• Basic
  • Hello, World!
  • Display a Pillow Image
• Entry Validation
  • Allow Alphanumeric
  • Allow Decimal
  • Allow Digits with A Max Length
  • Allow Lowercase
  • Allow Negative Integers
  • Allow Numbers In Range
  • Allow Only Alphabets
  • Allow Only Digits
  • Allow Positive Integers
  • Allow Signed Decimals
  • Allow Signed Integers
  • Allow Speific Characters
  • Allow Uppercase
  • Custom Regular Expression
  • Restrict Length
  • Validate File Path
• Menus
  • Context Menu

Type of Change

• ✨ New snippet
• 🛠 Improvement to an existing snippet
• 🐞 Bug fix
• 📖 Documentation update
• 🔧 Other (please describe):

Checklist

• I have tested my code and verified it works as expected.
• My code follows the style and contribution guidelines of this project.
• Comments are added where necessary for clarity.
• Documentation has been updated (if applicable).
• There are no new warnings or errors from my changes.

Related Issues

Additional Context

Screenshots (Optional)

Click to view screenshots

[Mathys-Gasnier]

Thanks for the contribution, sadly we do not accept new languages/sub languages if the only added snippet is an hello world, feel free to add other snippets.

If no changes is provided within 7-10 days, this PR will be closed.

[legopitstop]

Added more Tkinter snippets and updated the PR description.