UI: Add transport mode filtering to trip planner

[ksharma-xyz]

TL;DR

Added transport mode filtering functionality to the trip planner

What changed?

• Added support for excluding specific transport modes (train, bus, ferry, etc.) when planning trips
• Implemented mode selection UI with toggle functionality
• Added parameter handling for excluded transport modes in the API service
• Updated the TimeTableViewModel to handle mode selection changes and trigger API requests

How to test?

1. Navigate to the trip planner screen
2. Plan a journey between two locations
3. Use the transport mode filters to exclude specific modes (e.g., trains or buses)
4. Verify that the journey results update to exclude the selected transport modes
5. Toggle different combinations of transport modes and confirm the results update accordingly

Why make this change?

To provide users with more control over their journey planning by allowing them to exclude transport modes they don't want to use. This is particularly useful for users who have preferences for specific types of transport or want to avoid certain modes of travel.

[ksharma-xyz]

• UI: Add transport mode filtering to trip planner #609 👈 (View in Graphite)
• UI: Add mode selection filter to TimeTableScreen #608
• UI: Add transport mode filtering to TimeTableScreen #607
• UI: Add stable keys and fix loading emoji animation #605 : 1 other dependent PR (#606 )
• UI: Update light rail color and chip text contrast #604
• UI: Update TransportModeChip text color and border styling #603
• UI: Add transport mode selection row to TimeTableScreen #602
• UI: Add filter button to TimeTableScreen #601
• main

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[ksharma-xyz]

Merge activity

• Feb 12, 9:13 AM EST: Graphite rebased this pull request after merging its parent, because this pull request is set to merge when ready.
• Feb 12, 5:53 PM EST: A user merged this pull request with Graphite.