Add Option for User of ozone to specify a path to output directory for any files (csv, json, xlsl) that might be created

[Samxx97]

@Milind220 while writing the tests i noticed that running the _format_output() generates files in the current directory of the code , i think it would be better if the user himself can choose the location of the output of such files like csv or json or any future files that ozone might create.

the best way this can be done in my opinion is by adding a property output_dir to the class ozone itself , and this is a better approach than adding it as a parameter to each public function, since the user can choose his output directory when instantiating the ozone class itself and it would be used by all functions that need it.

[Samxx97]

Hold my beer, I got this