#1366 Buffer events from BoardListWatchResponse

[kittaakos]

Motivation

Hopefully, the board reconnecting issue is fixed for the teensy port protocol.

Change description

• Buffered the DetectedPort 'add'/'remove' events retrieved from the BoardListWatchResponsees to calculate a correct AttachedBoardsChangeEvent for the IDE2 frontend. If a board was detected to be removed and added in a short period, the discovery service would treat the events as a NOOP.
• Removed the board discovery stop/start guard when refreshing (InitRequest) the gRPC core client after the library/platform index updates. This will ensure that already discovered boards/ports won't be re-discovered. The force stop/start guard can be removed as [breaking] daemon: Fix concurrency and streamline access to PackageManager arduino-cli#1828 solved it on the CLI side, so no external guard is required from IDE2.

Other information

Closes #1366

Reviewer checklist

• PR addresses a single concern.
• The PR has no duplicates (please search among the Pull Requests before creating one)
• PR title and description are properly filled.
• Docs have been added / updated (for bug fixes / features)

[per1234]

I tested with the build from 417d95f and it does not fix #1366

[kittaakos]

Is part of #2149. Closing as a duplicate.