Add: Add One Row to Tree

[awesee]

No description provided.

[codecov]

Codecov Report

Merging #651 into master will not change coverage.
The diff coverage is 100%.

@@          Coverage Diff          @@
##           master   #651   +/-   ##
=====================================
  Coverage     100%   100%           
=====================================
  Files         194    195    +1     
  Lines        2004   2018   +14     
=====================================
+ Hits         2004   2018   +14

Impacted Files	Coverage Δ
...tree/convert_sorted_array_to_binary_search_tree.go	100% <ø> (ø)	⬆️
internal/kit/tree_node.go	100% <100%> (ø)	⬆️
...roblems/add-one-row-to-tree/add_one_row_to_tree.go	100% <100%> (ø)

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