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/css/project.css

@@ -0,0 +1,12 @@
+.o_kanban_project_tasks .o_field_one2many_sub_task {
+  margin-top:2px;
+  margin-right: 6px;
+}
+
+.o_form_project_project  .o_setting_box {
+  padding-left: 1.5rem;
+}
+
+.o_many2many_avatar_user_no_wrap div {
+   flex-wrap: nowrap !important;
+}