feat(software): add [ created_at ] property

webapp/src/Entity/Software.php

@@ -25,6 +25,9 @@ class Software
     #[ORM\Column(length: 150)]
     private ?string $slug = null;
 
+    #[ORM\Column]
+    private ?\DateTimeImmutable $created_at = null;
+
     public function getId(): ?int
     {
         return $this->id;
@@ -77,4 +80,16 @@ public function setSlug(string $slug): static
 
         return $this;
     }
+
+    public function getCreatedAt(): ?\DateTimeImmutable
+    {
+        return $this->created_at;
+    }
+
+    public function setCreatedAt(\DateTimeImmutable $created_at): static
+    {
+        $this->created_at = $created_at;
+
+        return $this;
+    }
 }