Update device progress percentage

[jason-ransom-slalom]

This PR is for adding additional DeviceProgress customization options and updating the defaults. New props capacitySubText and capacityLocation were added. Classnames were also added to the capacity elements so targeted styling can be applied. For instance, the following is now possible:

document.querySelector('div.progress-bar-fill  span').style.color = ‘red';
document.querySelector('div.progress-bar-bottom-text  span').style.color = ‘red';

If approved, this will close #272 .

Lakefront PR Checklist

• [x] Exported any new components in the src/index.ts
• [x] Updated the main README table.
• [x] Ensure version numbers were bumped properly.
• [x] Imported SVGs with relative path, if applicable.
• [x] Removed any irrelevant commit messages from merge commit.
• [x] Deleted branch after merge.