spelling warnings

tags: [conventions, cspell, spelling, warnings]

We have configured https://www.npmjs.com/package/@cspell/eslint-plugin to help catch typos. This doc covers guidelines to prevent the plugin from impacting workflows.

If new, valid words are needed, add these to:
- dict-calcite-design-system for terms within the Calcite Design System domain.
- dict-cspell-pending-upstream for terms belonging to an existing cspell dictionary. Submit a PR to add the words.
  - Once a PR is accepted and a package is updated, remove the local entry and rely on the updated package or add a new one to our cspell config file.
- dict-calcite-design-system-examples for terms not covered above but needed for examples (avoid this option whenever possible).
For dynamic terms, add a pattern to our cspell config file.
For cases like hex color strings, where neither adding a word nor handling it dynamically is feasible, disable the rule for the line and include an explainer.
Use hyphens for compound words (e.g., grand-grandchild instead of grandgrandchild).
For random or long text, use sequential letters (e.g., abcdefg instead of asdfjkl).
For long blocks of text, use standard lorem ipsum or long sentences.