feat(remaining_dist_eta): add msg definition for mission remaining distance and time

[ahmeddesokyebrahim]

Description

This PR aims to add a message definition for mission remaining distance and estimated time of arrival (ETA)

Related links

Part of:

• Implement Remaining Mission Distance and ETA Functionality and Visualization  autoware#4593

Used by:

• feat: add autoware_remaining_distance_time_calculator and overlay autoware.universe#6855
• feat(remaining_dist_eta): add MissionDetailsDisplay plugin rviz configuration autoware_launch#963

Tests performed

Please check the tests performed in autoware.universe PR

Notes for reviewers

For successful compilation and testing, please take into consideration the implementation in autoware.universe PR and autoware_launch PR

Interface changes

A new topic publishes this message added in autoware.universe PR.

Effects on system behavior

Along with the autoware.universe PR and autoware_launch PR, Autoware will have the feature to report the mission remaining distance and ETA

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After all checkboxes are checked, anyone who has write access can merge the PR.

[xmfcx]

Please move this to https://github.com/autowarefoundation/autoware_internal_msgs