PENGSOL-483: Add the script that fills the DWH Excel sheet.

scripts/excel_dwh_filler/README.md

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+# Excel DWH filler
+
+This script is used to fill the Excel file with data from DWH.
+
+## Requirements
+- Python 3.10+
+- The packages listed in the requirements file. You can install them with:
+```bash
+pip install -r requirements.txt
+```
+- The DWH Excel template. Paste it to the same directory as the script, and name it `template.xlsx`.
+
+## Usage
+
+Run the script from CLI with the following command:
+```bash
+python excel_sheets_filler.py --output_file=JO-GL.xlsx --db_url=XX.XXX.XX.XXX --db_name=PUTDBNAMEHERE --db_username=PUTDBUSERNAMEHERE --db_password=PUTPASSWORDHERE --site=JO-GL
+```
+
+Remember to replace the placeholders with the actual values: the database URL, database name, database username, database password, and site name.