Feat: Add 'watch' flag to import command

[Harsh4902]

Description

• This PR adds support for watch flag in import command.
• It allows user to import a local files to microcks instance and keep watch on them. On file change, files will automatically get re-imported.
• To keep track of files, we have added a separate program called microcks-watcher. You can build the binary of the microcks-watcher using make build-watcher.
• It will keep checking for changes in WatchConfig as well as all the files listed in this config.
• On changes in WatchConfig it can auto reload all the entries for keep watch on.

Related issue(s)

Resolves #158

[github-actions]

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

It will be closed in 30 days if no further activity occurs. To unstale this pull request, add a comment with detailed explanation.

There can be many reasons why some specific pull request 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.

Let us figure out together how to push this pull request forward. Connect with us through one of many communication channels we established here.

Thank you for your patience ❤️

[Harsh4902]

@lbroudoux Can we merge this?

[lbroudoux]

LGTM