feat(trunk): add customizable Asterisk Trunk Dial Options field with quick presets (tTR, TR, T)

src/Database.php

@@ -164,6 +164,7 @@ class Database
             outbound_prefix VARCHAR(32) NOT NULL DEFAULT '',
             custom_endpoint_params TEXT NOT NULL DEFAULT '',
             cid_name_prefix VARCHAR(64) NOT NULL DEFAULT '',
+            dial_options VARCHAR(32) NOT NULL DEFAULT 'tTR',
             enabled INTEGER NOT NULL DEFAULT 1 CHECK (enabled IN (0, 1)),
             created_at DATETIME DEFAULT CURRENT_TIMESTAMP
         );
@@ -578,6 +579,7 @@ class Database
             'custom_aor_params'        => "TEXT NOT NULL DEFAULT ''",
             'moh_sound_id'             => "INTEGER NOT NULL DEFAULT 0",
             'cid_name_prefix'          => "VARCHAR(64) NOT NULL DEFAULT ''",
+            'dial_options'             => "VARCHAR(32) NOT NULL DEFAULT 'tTR'",
         ];
 
         foreach ($extraColumns as $colName => $colDef) {