[DF-295] Adding method to add columns to a table

[jufreire]

Why? 📖

We want to encapsulate logic to add columns to a table in hive using thrift client classes.

What? 🔧

• Added add_columns_to_table method in HiveMetastoreClient to encapsulate logic of get table object representation from hive, add columns to the list of columns and call alter table to add the new columns.
• Added example on how to use the add_columns_to_table method.
• Added unit tests.

Type of change 🗄️

• New feature (non-breaking change which adds functionality)
• This change requires a documentation update

How everything was tested? 📏

Running locally and with unit tests.

Checklist 📝

• I have added labels to distinguish the type of pull request.
• My code follows the style guidelines of this project (docstrings, type hinting and linter compliance);
• I have performed a self-review of my own code;
• I have made corresponding changes to the documentation;
• I have added tests that prove my fix is effective or that my feature works;
• I have made sure that new and existing unit tests pass locally with my changes;

[LucasMMota]

lgtm