Shared components example, better "language" option support

[shawnbot]

Three things in this PR:

1. I added an example that loads our shared components resource directly from form.io
2. I added the ability to pass form options into examples via the query string so that we can test shared components (and other examples) with different options at runtime
3. I fixed a bug that was causing the DOM lang attribute to override the language form option, if provided. This was preventing ?language=es (check the "Next" button text) from working in examples.

Fixes #161.

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[github-actions[bot]]

Size Change: +934 B (0%)

Total Size: 99.7 kB

Filename	Size	Change
dist/examples.js	11.5 kB	+852 B (7%)	🔍
dist/formio-sfds.standalone.js	68.4 kB	+82 B (0%)

ℹ️ View Unchanged

| Filename | Size | Change | | |:--- |:---:|:---:|:---:| | `dist/common.css` | 332 B | 0 B | | | `dist/formio-sfds.css` | 14 kB | 0 B | | | `dist/portal.js` | 5.36 kB | 0 B | |

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