added visualisaton file in the tree

[BenakDeepak]

Pull Request for PyVerse 💡

Issue Title : <!-- 🧑‍💻: enhancing the visualization by step by step analysis of the tree #186

-->

• Info about the related issue (Aim of the project) :
• Name: <!--Benak Deepak->
• GitHub ID:
• Email ID:
• Idenitfy yourself: (Mention in which program you are contributing in)

Closes: #186

Describe the add-ons or changes you've made 📃

☑️added a folder named visualizer at the location

PyVerse/tree/main/Algorithms_and_Data_Structures

☑️ The folder consist of 4 files with includes the binary_search_tree,binary_tree,heap_sort and tree_traversal
these are the visualtion I have added

Type of change ☑️

What sort of change have you made:

• Bug fix (non-breaking change which fixes an issue)
• [ ☑️] New feature (non-breaking change which adds functionality)
• Code style update (formatting, local variables)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

How Has This Been Tested? ⚙️

Describe how it has been tested
Describe how have you verified the changes made
I have executed the code in my localhost and the tree generated by the visualizer are also correct which is verified for online resourses

Checklist: ☑️

• [ ☑️] My code follows the guidelines of this project.
• [☑️ ] I have performed a self-review of my own code.
• [ ☑️] I have commented my code, particularly wherever it was hard to understand.
• [☑️ ] I have made corresponding changes to the documentation.
• [ ☑️] My changes generate no new warnings.
• [☑️ ] I have added things that prove my fix is effective or that my feature works.
• [☑️ ] Any dependent changes have been merged and published in downstream modules.

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