v10.4.0-prerelease.21

What's Changed

Fixes 🐛

• fix(rules-engine): missing schematics templates by @kpanot in #1800
• fix(vscode-ext): autocomplete for o3r category by @matthieu-crouzet in #1805
• fix(vscode-ext): rollback the tasks for debug the extension by @matthieu-crouzet in #1809
• Cascade/10.2to10.3.0 rc by @vscaiceanu-1a in #1810

Full Changelog: v10.4.0-prerelease.20...v10.4.0-prerelease.21