test: Refactor test suite

[rschristian]

The test suite is a bit difficult to traverse at the moment, largely due to similar tests not being grouped together and different test cases sharing CE definitions, creating unclear dependencies. This PR looks to improve that situation whilst also adding a handful of tests for missing cases (which are now more obvious due to the reorganization).

• Creates a dedicated test module for the options bag, adding a couple extra tests
• Creates a dedicated test module for static properties, adding a few new tests
• Moves most CE registrations/definitions into the consuming test case
  • These are technically global, but stops us from trying to share across test cases so readily which is, IMO, problematic when making changes

[github-actions]

Size Change: 0 B

Total Size: 4.11 kB

ℹ️ View Unchanged

Filename	Size
dist/preact-custom-element.esm.js	1.36 kB
dist/preact-custom-element.js	1.34 kB
dist/preact-custom-element.umd.js	1.41 kB

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