* feat: add ICMP ping check support to item
* Replaced ping package with pingman package to be compliant with Dashy CI NodeJS version (20).
Fixed a behavior bug in status indicator component which didn't changed icon to yellow when checking.
Made otherStatusText a computed field to make it reflecting dynamically a new check request.
Added more examples to default conf.yml
* Removed a forgotten trace to console
* Made changes requested by Lissy after review of the PR.
Corrected tests using localhost which is not a valid host for pingman.
Added a Validator.js file in src/utils with function to check validity of hosts.
Reverted conf.yml file to the original version.
* Fixed a problem in configuration of pingman call after adding support of IPV6 addresses.
* Updated Dockerfile to pass Docker smoke tests in CI
* Revert to latest version of `user-data/conf.yml` from `master`
* Removed the duplicated feature line for ping check and just added `hosts` to the existing one
* Removed the unused `shouldEnabledPingCheck` function
* Add the ping system package and give rights to use to the node user so the pingman module can work in Docker container
* Remove `src/utils/Validator.js` file. Rely on `pingman` internal validation of hostname instead to avoid command injection.
By default, everything functions the same. But if the `DISABLE_CONFIG_BACKUPS` env var is set, then when the user saves the config to disk (via UI, calling the save-config endpoint), then the previous config will not get coppied/backedup to the BACKUP_DIR (user-data/config-backups) anymore. Also added docs for this change. This option might be useful on file systems with restricted permissions (if /app/user-data/config-backups doesn't have create/write access), or when the user just doesn't want a ton of backup files for every single litttle config change.
Adds a timeout to prevent ever lasting requests, surrounds JSON parse with try catch when header missing uses a 400 status code instead of 500 and fixes the error messaging for this
