[REF] runbot: prepare terrain for owl capabilities

[Williambraecky]

• Reorganize static folder
• Fix diff_match_patch export which was borked
• Vendor owl.js and expose through odoo module
• Add a way to render owl components on the frontend
• Add a way to add interaction through colibri framework
• Rewrite runbot.js using colibri
• Remove direct rels to assets in layout template