App platform: Add cleanup job for dashboards when going through /apis (kubectl) (#102506)

* Add dashboard cleanup job

Change log message

Adjust logic to account for new head RV logic

Don't update lastResourceVersion due to pagination

Save improvements

* Address review feedback

* Update docs.

* Remove docs

* Rename config

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Co-authored-by: Marco de Abreu <18629099+marcoabreu@users.noreply.github.com>

pkg/setting/setting.go

@@ -181,6 +181,9 @@ type Cfg struct {
 	DataProxyWhiteList              map[string]bool
 	ActionsAllowPostURL             string
 
+	// K8s Dashboard Cleanup
+	K8sDashboardCleanup K8sDashboardCleanupSettings
+
 	TempDataLifetime time.Duration
 
 	// Plugins
@@ -1291,6 +1294,7 @@ func (cfg *Cfg) parseINIFile(iniFile *ini.File) error {
 
 	cfg.readDataSourcesSettings()
 	cfg.readDataSourceSecuritySettings()
+	cfg.readK8sDashboardCleanupSettings()
 	cfg.readSqlDataSourceSettings()
 
 	cfg.Storage = readStorageSettings(iniFile)