Add server log file rotation settings

public/locales/en.json

@@ -997,6 +997,20 @@
         }
       },
       "misc": {
+        "log_files": {
+          "file_cleanup": {
+            "title": "Log file cleanup",
+            "value": "Delete backups that are older than $t(global.date.value.label.day)"
+          },
+          "file_size": {
+            "description": "Example for possible values: 1 (bytes), 1KB (kilobytes), 1MB (megabytes), 1GB (gigabytes)",
+            "title": "Maximum log file size"
+          },
+          "total_size": {
+            "description": "$t(settings.server.misc.log_files.file_size.description)",
+            "title": "Maximum size of all log files"
+          }
+        },
         "log_level": {
           "graphql": {
             "label": {