1-  Streamlining Employee Data
            Import employee and human resources data in CSV, Excel, and JSON format. Then merge it all into a single DataFrame, before cleaning it and exporting my results into
            a single CSV file.

            Steps of solving:
            1. Loading data from CSV and Excel files
            2. Loading employee data from Excel sheets
            3. Loading role data from JSON files
            4. Merging several DataFrames into one
            5. Editing column names
            6. Changing column order
            7. Saving your work