Pull request 2111: 6545-schema-version

Updates #6545.

Squashed commit of the following:

commit b1969128a99ff21c97feb4e7805b4b8133d7122f
Author: Ainar Garipov <A.Garipov@AdGuard.COM>
Date:   Fri Dec 15 20:04:37 2023 +0300

    home: fix import

commit 872ccea1491a8da76cc24db79247438d0ce4d256
Author: Ainar Garipov <A.Garipov@AdGuard.COM>
Date:   Fri Dec 15 20:01:15 2023 +0300

    all: output schema version

internal/configmigrate/v15.go

@@ -0,0 +1,52 @@
+package configmigrate
+
+// migrateTo15 performs the following changes:
+//
+//	# BEFORE:
+//	'schema_version': 14
+//	'dns':
+//	  # …
+//	  'querylog_enabled': true
+//	  'querylog_file_enabled': true
+//	  'querylog_interval': '2160h'
+//	  'querylog_size_memory': 1000
+//	'querylog':
+//	  # …
+//	# …
+//
+//	# AFTER:
+//	'schema_version': 15
+//	'dns':
+//	  # …
+//	'querylog':
+//	  'enabled': true
+//	  'file_enabled': true
+//	  'interval': '2160h'
+//	  'size_memory': 1000
+//	  'ignored': []
+//	  # …
+//	# …
+func migrateTo15(diskConf yobj) (err error) {
+	diskConf["schema_version"] = 15
+
+	dns, ok, err := fieldVal[yobj](diskConf, "dns")
+	if !ok {
+		return err
+	}
+
+	qlog := map[string]any{
+		"ignored":      yarr{},
+		"enabled":      true,
+		"file_enabled": true,
+		"interval":     "2160h",
+		"size_memory":  1000,
+	}
+	diskConf["querylog"] = qlog
+
+	return coalesceError(
+		moveVal[bool](dns, qlog, "querylog_enabled", "enabled"),
+		moveVal[bool](dns, qlog, "querylog_file_enabled", "file_enabled"),
+		moveVal[any](dns, qlog, "querylog_interval", "interval"),
+		moveVal[int](dns, qlog, "querylog_size_memory", "size_memory"),
+	)
+}