chore: update template and create showroom section

.config/silicon.cfg

.gitlab/issue_templates/bug.md

.gitlab/issue_templates/default.md

Taskfile.yml

development/issues/182.html

devenv.nix

nbproject/project.properties

nbproject/project.xml

showroom/mock/demo.js

showroom/video/monster-width-toggle/index.html

showroom/video/monster-width-toggle/script.mjs

showroom/video/monster-width-toggle/style.pcss

showroom/vite.config.js

source/components/layout/style/width-toggle.pcss

source/components/layout/stylesheet/width-toggle.mjs

source/components/layout/width-toggle.mjs