Improve admin distribution editing flow

admin/data/catalog.json

@@ -9,7 +9,7 @@
       "modsEnabled": false,
       "pluginsEnabled": false,
       "serverEnabled": false,
-      "distributionUrl": "https://example.com/launcher/map-base.distribution.json",
+      "distributionUrl": "admin/data/distributions/template-map-base.distribution.json",
       "worldArchiveUrl": "https://example.com/worlds/map-base.zip",
       "worldDirectoryName": "Map Base"
     },
@@ -21,7 +21,7 @@
       "modsEnabled": true,
       "pluginsEnabled": false,
       "serverEnabled": false,
-      "distributionUrl": "https://example.com/launcher/map-mods.distribution.json",
+      "distributionUrl": "admin/data/distributions/template-map-mods.distribution.json",
       "worldArchiveUrl": "https://example.com/worlds/map-mods.zip",
       "worldDirectoryName": "Map Mods"
     },
@@ -33,7 +33,7 @@
       "modsEnabled": false,
       "pluginsEnabled": true,
       "serverEnabled": true,
-      "distributionUrl": "https://example.com/launcher/map-plugin-server.distribution.json",
+      "distributionUrl": "admin/data/distributions/template-map-plugin-server.distribution.json",
       "worldArchiveUrl": "https://example.com/worlds/plugin-map.zip",
       "worldDirectoryName": "Plugin Map",
       "serverJarUrl": "https://example.com/server/paper.jar",

admin/data/distributions/template-map-base.distribution.json

@@ -0,0 +1,5 @@
+{
+  "version": "1.0.0",
+  "rss": "",
+  "servers": []
+}

admin/data/distributions/template-map-mods.distribution.json

@@ -0,0 +1,16 @@
+{
+  "version": "1.0.0",
+  "rss": "",
+  "servers": [
+    {
+      "id": "template-map-mods",
+      "name": "Map + Mods Template",
+      "description": "맵과 모드를 함께 쓰는 프로필용 샘플 distribution입니다.",
+      "version": "1.20.1",
+      "minecraftVersion": "1.20.1",
+      "mainServer": true,
+      "autoconnect": false,
+      "modules": []
+    }
+  ]
+}

admin/data/distributions/template-map-plugin-server.distribution.json

@@ -0,0 +1,16 @@
+{
+  "version": "1.0.0",
+  "rss": "",
+  "servers": [
+    {
+      "id": "template-map-plugin-server",
+      "name": "Map + Plugin Server Template",
+      "description": "맵, 플러그인, 서버를 함께 쓰는 프로필용 샘플 distribution입니다.",
+      "version": "1.20.1",
+      "minecraftVersion": "1.20.1",
+      "mainServer": true,
+      "autoconnect": false,
+      "modules": []
+    }
+  ]
+}