Modeler Relate

Updated the style and overall look for Data Lineage (PRONTO-12713)

Improved the style and overall look for the Source and Data Flow views in Data Lineage, improving overall usability.

These changes include but are not limited to:

• Updated colors for data objects so that users can differentiate between data.
• Updated shading and colors so that users can identify the data objects they are hovering over.
• Hover colors to identify join lines the user rests the cursor on in the Data Flow view.
• over colors for the dotted data lineage arrows and lines in the Lineage view.