To add DFS, BFS and BST using LinkedList codes in datastructure/graphs & trees section in java

[psantosh16]

Is your feature request related to a problem? Please describe.
There's no code for

1. DFS
2. BFS
3. BST using Linked List

Describe the solution you'd like
To add Codes for DFS and BFS along with LinkedList code for BST in java

Additional context
I will be great if you allow me to contribute in this repo , not only it help me to improve my skills but also help beginners who visit this repo to learn more about java and help them to build logic in java.

[psyop-21]

hi @psantosh16 I would like to work on this issue, can you please assign it to me please :)

[drashan14]

Hello sir /mam
I would like to do this job could you assign me this issue.

[Meghwantsingh]

I would like to solve this problem assign this to me sir.

[github-actions]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[github-actions]

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