Add device master migration file

database/migrations/2025_07_30_110725_create_device_masters_table.php

@@ -0,0 +1,45 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+         $sql = <<<'SQL'
+            CREATE TABLE device_masters (
+                id					BIGINT GENERATED always AS IDENTITY PRIMARY KEY,
+                plant_id            BIGINT NOT NULL,
+
+                name                TEXT NOT NULL,
+                mac_address         TEXT DEFAULT NULL,
+                ip_address          TEXT DEFAULT NULL,
+
+                created_at			TIMESTAMP NOT NULL DEFAULT NOW(),
+                updated_at			TIMESTAMP NOT NULL DEFAULT NOW(),
+                deleted_at			TIMESTAMP,
+
+                created_by			TEXT NULL,
+
+                UNIQUE (name, plant_id),
+                FOREIGN KEY (plant_id)      REFERENCES  plants (id)
+
+            );
+        SQL;
+
+        DB::statement($sql);
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::dropIfExists('device_masters');
+    }
+};