- Supports separate registration and instantiation
 - Supports webview provider code-splitting

Removes re-export of config from configuration

Changes `sendCommandWithCompletion` to return a promise

Removes strict-boolean-expressions because its too noisy

Avoids unneeded `void`s to know if return value is intentionally discarded
Uses `type` imports when possible (avoids unneeded bundling)

Reworks all usages to use configuration.get

- Adds override support to configuration
 - Splits configuration.get into get & getAll
 - Allows passing array to configuration.changed
Avoids getting the entire configuration on startup

Adds autolink configure command to autolinked issues & prs node

Adds show method to webview views

Adds links footer to home view when welcome is hidden
Polishes welcome/settings page headers
Removes links from welcome page
Removes old welcome view

Improves DOM methods