feat(server): implement sealed share lifecycle

Signed-off-by: JustMe <mr.toing@outlook.com>

server/src/WebDrop.Api/appsettings.json

@@ -0,0 +1,26 @@
+{
+  "Logging": {
+    "LogLevel": {
+      "Default": "Information",
+      "Microsoft.AspNetCore": "Warning",
+      "Microsoft.AspNetCore.Hosting.Diagnostics": "None"
+    }
+  },
+  "WebDrop": {
+    "DataDir": "data",
+    "CorsOrigins": [],
+    "TrustForwardedHeaders": false,
+    "EnableHttp3": false,
+    "RequestsPerMinute": 600,
+    "ChannelCreatesPerMinute": 30,
+    "ShareDraftTtlSeconds": 86400,
+    "SweepIntervalSeconds": 30,
+    "Captcha": {
+      "Provider": "none",
+      "ApiEndpoint": "",
+      "SiteverifyUrl": "",
+      "Secret": "",
+      "TimeoutSeconds": 5
+    }
+  }
+}