Eliminate Python dependency: embed frontend assets in odoo-go

- Copy all OWL frontend assets (JS/CSS/XML/fonts/images) into frontend/
  directory (2925 files, 43MB) — no more runtime reads from Python Odoo
- Replace OdooAddonsPath config with FrontendDir pointing to local frontend/
- Rewire bundle.go, static.go, templates.go, webclient.go to read from
  frontend/ instead of external Python Odoo addons directory
- Auto-detect frontend/ and build/ dirs relative to binary in main.go
- Delete obsolete Python helper scripts (tools/*.py)

The Go server is now fully self-contained: single binary + frontend/ folder.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

frontend/project/static/src/interactions/project_rating_image.js

@@ -0,0 +1,26 @@
+import { Interaction } from "@web/public/interaction";
+import { registry } from "@web/core/registry";
+
+import { parseDate } from "@web/core/l10n/dates";
+
+export class ProjectRatingImage extends Interaction {
+    static selector = ".o_portal_project_rating .o_rating_image";
+
+    start() {
+        window.Popover.getOrCreateInstance(this.el, {
+            placement: "bottom",
+            trigger: "hover",
+            html: true,
+            content: () => {
+                const duration = parseDate(this.el.dataset.ratingDate).toRelative();
+                const ratingEl = document.querySelector("#rating_" + this.el.dataset.id);
+                ratingEl.querySelector(".rating_timeduration").textContent = duration;
+                return ratingEl.outerHTML;
+            },
+        });
+    }
+}
+
+registry
+    .category("public.interactions")
+    .add("project.project_rating_image", ProjectRatingImage);