* add clearStaleness method since === SKIP_CHECK flag
* fix logic for updating staleness
* should be inclusive to start and end bounds
* should respect prior to start bounds if stale
* should not show staleness for after end bounds
* add `ExampleStalenessProvider`
update telemetry api jsdocs for staless provider
* move sine wave staleness tests into appropriate folder location
* convert `StateGenerator` into class
* clean up coding style
* use timesystem key and now() from openmct time api
* fix `ExampleStalenessProvider` initial conditions
install `ExampleStalenessProvider` by default in index.html
* Revert "fix logic for updating staleness"
To allow contribution from marcelo-earth
This reverts commit 3baef169f7.
* Refactor shouldUpdateStaleness to accept updates based on timestamp
* clarify comment
remove unused code
* fix import paths
* clean up staleness provider
write e2e test for staleness
* fix 404s to example imagery breaking e2e tests
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Co-authored-by: Marcelo Arias <hello@marceloarias.com>
