Package manager UI-related tweaks (#4382)

* Add Plugins Path setting
* Fix/improve cache invalidation
* Hide load error when collapsing package source
* Package manager style tweaks
* Show error if installed packages query failed
* Prevent "No packages found" flicker
* Show <unknown> if empty version
* Always show latest version, highlight if new version available
* Fix issues with non-unique cross-source package ids
* Don't wrap id, version and date
* Decrease collapse button padding
* Display description for scraper packages
* Fix default packages population
* Change default package path to community
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Co-authored-by: WithoutPants <53250216+WithoutPants@users.noreply.github.com>

internal/api/resolver_query_configuration.go

@@ -87,6 +87,7 @@ func makeConfigGeneralResult() *ConfigGeneralResult {
 		MetadataPath:                  config.GetMetadataPath(),
 		ConfigFilePath:                config.GetConfigFile(),
 		ScrapersPath:                  config.GetScrapersPath(),
+		PluginsPath:                   config.GetPluginsPath(),
 		CachePath:                     config.GetCachePath(),
 		BlobsPath:                     config.GetBlobsPath(),
 		BlobsStorage:                  config.GetBlobsStorage(),