Write documentation for the new `watch` command

[lbroudoux]

Describe the bug

watch is a new command coming with 1.0.0. We should provide documentation on use-cases and how to enable/disable watchers.

Attach any resources that can help us understand the issue.

No response

[github-actions]

This issue has been automatically marked as stale because it has not had recent activity 😴

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There can be many reasons why some specific issue has no activity. The most probable cause is lack of time, not lack of interest. Microcks is a Cloud Native Computing Foundation project not owned by a single for-profit company. It is a community-driven initiative ruled under open governance model.

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Thank you for your patience ❤️

[lbroudoux]

Now done with the merge of #179