Rohan/slackbot

[rohanbhadange]

Summary

Adds Slack-based remote communication helpers for ScoutMini, including a ROS
gateway, Slack command bot, status publishing utilities, and documentation for
operating the setup safely.

The goal is to let the robot report status and accept limited remote commands
through Slack while keeping credentials external to the repository.

Scope

• Adds remote communication documentation under docs/remote_communication/
• Adds SendSlackMessage.srv to scoutmini_interfaces
• Adds Slack gateway, command bot, and status publisher scripts to
  scoutmini_tasks
• Adds helper scripts under scripts/slack/
• Adds placeholder .env examples without real credentials

[nhat-m-le]

First round of review. Two main things: create a scoutmini_slack package and put the changes in scoutmini_tasks over there; need some placeholder callback to handle incoming message.

[nhat-m-le]

Copy the content to the actual PR and remove this file

[nhat-m-le]

See what's still needed to keep in this file otherwise remove

[nhat-m-le]

Revise to see what to keep

[nhat-m-le]

should be handled by repo-wide .gitignore

[nhat-m-le]

does this handle receiving message yet? I'd want to be able to handle incoming message knowing where they come from and on which channel and the timestamp

[nhat-m-le]

Let's create a scoutmini_slack and put all the changes in this scoutmini_tasks package for Slack over there.

[nhat-m-le]

should be handled by repo-wide .gitignore instead