Migrate to webpack for better bundeling and add codemirror

core/build.gradle.kts

core/package-lock.json

core/package.json

core/src/ts/components/components.ts

core/src/ts/components/markdown_codemirror.ts

core/src/ts/components/selectbox.ts

core/tsconfig.json

core/webpack.config.cjs

documentation/package-lock.json

documentation/package.json

documentation/src/app.html

documentation/src/routes/components/textfield/+page.svelte

documentation/webpack.config.cjs