add breadcrumbs

src/views/category/edit.blade.php

 @extends('crm-admin::main-layout')
-
+@section('breadcrumb')
+  <li class="breadcrumb-item">
+    <a href="{{route('home')}}">Home</a>
+  </li>
+  <li class="breadcrumb-item">
+    <a href="{{route('admin.product.index')}}">Productos</a>
+  </li>
+  <li class="breadcrumb-item">
+    <a href="{{route('admin.product.category.index')}}">Lista de categorías</a>
+  </li>
+  <li class="breadcrumb-item active">
+    {{$category->name}}
+  </li>  
+@endsection
 @section('content')
 <div class='row'>
   <div class='col-md-12'>

src/views/category/index.blade.php

 @extends('crm-admin::main-layout')
-
+@section('breadcrumb')
+  <li class="breadcrumb-item">
+    <a href="{{route('home')}}">Home</a>
+  </li>
+  <li class="breadcrumb-item">
+    <a href="{{route('admin.product.index')}}">Productos</a>
+  </li>
+  <li class="breadcrumb-item active">
+    Lista de categorías
+  </li>
+@endsection
 @section('content')
 <div class='row'>
   <div class='col-md-12 collapse' id='agregarCategoria'>

src/views/product/create.blade.php

 @extends('crm-admin::main-layout')
-
+@section('breadcrumb')
+  <li class="breadcrumb-item">
+    <a href="{{route('home')}}">Home</a>
+  </li>
+  <li class="breadcrumb-item">
+    <a href="{{route('admin.product.index')}}">Productos</a>
+  </li>
+  <li class="breadcrumb-item active">
+    Crear producto
+  </li>
+@endsection
 @section('content')
 <div class='row'>
   <div class='col-md-12'>

src/views/product/edit.blade.php

 @extends('crm-admin::main-layout')
+@section('breadcrumb')
+<li class="breadcrumb-item">
+    <a href="{{route('home')}}">Home</a>
+  </li>
+  <li class="breadcrumb-item">
+    <a href="{{route('admin.product.index')}}">Productos</a>
+  </li>
+  <li class="breadcrumb-item active">
+    {{$product->name}}
+  </li>
+@endsection  
 @section('css_extras')
 <link href="https://cdnjs.cloudflare.com/ajax/libs/dropzone/5.4.0/min/dropzone.min.css" rel='stylesheet' type='text/css'>
 @endsection

src/views/product/index.blade.php

 @extends('crm-admin::main-layout')
-
+@section('breadcrumb')
+  <li class="breadcrumb-item">
+    <a href="{{route('home')}}">Home</a>
+  </li>
+  <li class="breadcrumb-item">
+    <a href="{{route('admin.product.index')}}">Productos</a>
+  </li>
+  <li class="breadcrumb-item active">
+    Lista de productos
+  </li>
+@endsection
 @section('content')
 <div class='row'>
   <div class='col-md-12'>

src/views/variable/edit.blade.php

 @extends('crm-admin::main-layout')
-
+@section('breadcrumb')
+  <li class="breadcrumb-item">
+    <a href="{{route('home')}}">Home</a>
+  </li>
+  <li class="breadcrumb-item">
+    <a href="{{route('admin.product.index')}}">Productos</a>
+  </li>
+  <li class="breadcrumb-item active">
+    Variables
+  </li> 
+@endsection
 @section('content')
 <div class='row'>
   <div class='col-md-12'>