Left-View of a Binary Search Tree [JAVA]

source link : https://www.geeksforgeeks.org/print-left-view-binary-tree/

- [x] Issue Title is in form 'Left-View of Binary Search Tree [Java]'.
- [x] I searched or browsed the repo’s other issues to ensure this is not a duplicate.
- [x] This Algo/DS is worth adding to this repository.
- [x] Assign this issue to me (I want to work on this).
- [x] I will send my PR only after I'm assigned to this issue by any maintainer.
- [x] I understand that I will be unassigned from this issue if I fail to send a PR for this within a week.

Kindly assign me this issue under Contribute-a-thon'21