Add post and species forms

Squashed commit of the following:
Author: Hugo PRADIER <Hugo.PRADIER2@etu.uca.fr>
Author: bastien ollier <bastien.ollier@etu.uca.fr>
Author: clfreville2 <clement.freville2@etu.uca.fr>
Reviewed on #7

templates/post/show.html.twig

@@ -0,0 +1,46 @@
+{% extends 'base.html.twig' %}
+
+{% block title %}Post{% endblock %}
+
+{% block body %}
+    <h1>Post</h1>
+
+    <table class="table">
+        <tbody>
+            <tr>
+                <th>Id</th>
+                <td>{{ post.id }}</td>
+            </tr>
+            <tr>
+                <th>FoundDate</th>
+                <td>{{ post.foundDate ? post.foundDate|date('Y-m-d H:i:s') : '' }}</td>
+            </tr>
+            <tr>
+                <th>PublicationDate</th>
+                <td>{{ post.publicationDate ? post.publicationDate|date('Y-m-d H:i:s') : '' }}</td>
+            </tr>
+            <tr>
+                <th>Latitude</th>
+                <td>{{ post.latitude }}</td>
+            </tr>
+            <tr>
+                <th>Longitude</th>
+                <td>{{ post.longitude }}</td>
+            </tr>
+            <tr>
+                <th>Altitude</th>
+                <td>{{ post.altitude }}</td>
+            </tr>
+            <tr>
+                <th>Commentary</th>
+                <td>{{ post.commentary }}</td>
+            </tr>
+        </tbody>
+    </table>
+
+    <a href="{{ path('app_post_index') }}">back to list</a>
+
+    <a href="{{ path('app_post_edit', {'id': post.id}) }}">edit</a>
+
+    {{ include('post/_delete_form.html.twig') }}
+{% endblock %}