feat: show announcement banners #3130

Job	Run time
Chromatic	37s
Package	47s
Integration Test (Windows, VS Code stable)	3m 27s
Lint	1m 39s
Unit Test (Linux, Electron 37)	1m 26s
Unit Test (macOS, Electron 42.3.0)	1m 52s
Integration Test (Linux, VS Code stable)	55s
Integration Test (Linux, VS Code 1.105.0)	58s
Unit Test (Linux, Electron 42.3.0)	1m 20s
Integration Test (macOS, VS Code stable)	1m 44s
Unit Test (Windows, Electron 42.3.0)	3m 6s
	17m 51s

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