Add files via upload

.devcontainer/devcontainer.json

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+{
+  "image": "mcr.microsoft.com/devcontainers/universal:2",
+  "features": {
+  }
+}

Errors.ts

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+export abstract class ErrorsV5 {
+    static readonly signature_disabled = 132;
+    static readonly invalid_seqno = 133;
+    static readonly invalid_wallet_id = 134;
+    static readonly invalid_signature = 135;
+    static readonly expired = 136;
+    static readonly external_send_message_must_have_ignore_errors_send_mode = 137;
+    static readonly invalid_message_operation = 138;
+    static readonly add_extension = 139;
+    static readonly remove_extension = 140;
+    static readonly unsupported_action = 141;
+    static readonly disable_signature_when_extensions_is_empty = 142;
+    static readonly this_signature_mode_already_set = 143;
+    static readonly remove_last_extension_when_signature_disabled = 144;
+    static readonly extension_wrong_workchain = 145;
+    static readonly only_extension_can_change_signature_mode = 146;
+    static readonly invalid_c5 = 147;
+}