feat: update font to Roboto across templates and add campaign/ad group filters in product views

- Changed font from Open Sans to Roboto in layout files.
- Added campaign and ad group filters in products main view.
- Enhanced product history to include campaign and ad group IDs.
- Updated migrations to support new campaign and ad group dimensions in product statistics.
- Introduced new migration files for managing campaign types and dropping obsolete columns.

layout/style.css

@@ -3,7 +3,7 @@
 }
 
 body {
-  font-family: "Open Sans", sans-serif;
+  font-family: "Roboto", sans-serif;
   margin: 0;
   padding: 0;
   font-size: 14px;
@@ -162,7 +162,7 @@ body.unlogged {
   border-radius: 8px;
   padding: 0 14px;
   font-size: 14px;
-  font-family: "Open Sans", sans-serif;
+  font-family: "Roboto", sans-serif;
   color: #2D3748;
   transition: border-color 0.3s, box-shadow 0.3s;
 }
@@ -493,7 +493,7 @@ body.logged {
   justify-content: center;
   align-items: center;
   font-size: 14px;
-  font-family: "Open Sans", sans-serif;
+  font-family: "Roboto", sans-serif;
   font-weight: 500;
 }
 .btn.btn_small, .btn.btn-xs, .btn.btn-sm {
@@ -532,7 +532,7 @@ body.logged {
   height: 38px;
   width: 100%;
   padding: 6px 12px;
-  font-family: "Open Sans", sans-serif;
+  font-family: "Roboto", sans-serif;
   font-size: 14px;
   color: #2D3748;
   transition: border-color 0.2s, box-shadow 0.2s;
@@ -1577,7 +1577,7 @@ table#products a.custom_name {
   border-radius: 6px;
   padding: 8px 12px;
   font-size: 14px;
-  font-family: "Open Sans", sans-serif;
+  font-family: "Roboto", sans-serif;
 }
 .comment-form textarea {
   min-height: 120px;
@@ -1676,3 +1676,4 @@ table#products a.custom_name {
 }
 
 /*# sourceMappingURL=style.css.map */
+