Display applied filters in HTML report

[sparshsinghal885]

Description

This PR resolves the issue of generated HTML files lacking context. It introduces a feature to display a summary of all user-selected filters directly at the top of the HTML report. This makes the output files self-documenting and much more useful when shared.

Summary of Changes

• Filter Tracking: Implemented a dictionary (applied_filters) that is initialized at the start of a counseling session.
• Data Propagation: This dictionary is passed through the function call stack, with each step adding the relevant user choice (e.g., year, round, institute type).
• Dynamic Rendering: The display_df_web function now uses this dictionary to dynamically generate an "Applied Filters" list in the HTML output.

Example of New Output

The generated HTML file will now include a section like this:

!

Applied Filters:

• Counseling Type: JOSAA
• Year: 2023
• Round: 6
• Institute Type: NITs
• Program: Computer Science and Engineering
• Institute: All
• Quota: All India, Home State
• Seat Type: OPEN, EWS
• Gender: Gender-Neutral
• Your Rank (Show colleges with closing rank >): 12424