Add RepoChangeService

MareSynchronos/Services/RepoChangeConfig.cs

@@ -0,0 +1,12 @@
+using System.Text.Json.Serialization;
+
+namespace MareSynchronos.Services;
+
+public record RepoChangeConfig
+{
+    [JsonPropertyName("current_repo")]
+    public string? CurrentRepo { get; set; }
+
+    [JsonPropertyName("valid_repos")]
+    public string[]? ValidRepos { get; set; }
+}