feat: new model and related migrations for issues table

app/Models/Issue.php

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+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsToMany;
+use OwenIt\Auditing\Contracts\Auditable;
+
+class Issue extends Model implements Auditable
+{
+    use \OwenIt\Auditing\Auditable;
+
+    /**
+     * The attributes that are mass assignable.
+     *
+     * @var array<int, string>
+     */
+    protected $fillable = [
+        'user_id',
+        'title',
+        'comment',
+    ];
+
+    /**
+     * The attributes that should be cast.
+     *
+     * @var array
+     */
+    protected $casts = [
+    ];
+
+    /**
+     * Get the molecules associated with the issue.
+     */
+    public function molecules(): BelongsToMany
+    {
+        return $this->belongsToMany(Molecule::class)->withPivot('is_active', 'is_fixed')->withTimestamps();
+    }
+}

database/migrations/2024_12_13_140033_create_issues_table.php

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+<?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
+    {
+        Schema::create('issues', function (Blueprint $table) {
+            $table->id();
+            $table->foreignId('user_id');
+            $table->longText('title');
+            $table->longText('comment');
+            $table->timestamps();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::dropIfExists('issues');
+    }
+};

database/migrations/2024_12_13_150749_add_has_issue_column_to_molecules_table.php

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+<?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
+    {
+        Schema::table('molecules', function (Blueprint $table) {
+            $table->boolean('has_issues')->default(false);
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::table('molecules', function (Blueprint $table) {
+            $table->dropColumn(['has_issues']);
+        });
+    }
+};

database/migrations/2024_12_13_233712_create_issue_molecule_table.php

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+<?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
+    {
+        Schema::create('issue_molecule', function (Blueprint $table) {
+            $table->id();
+            $table->foreignId('issue_id');
+            $table->foreignId('molecule_id');
+            $table->boolean('is_active')->default(true);
+            $table->boolean('is_fixed')->default(false);
+            $table->timestamps();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::dropIfExists('issue_molecule');
+    }
+};