Write install guide #1608

Job	Run time
Flutter integration tests (windows)	11m 50s
Go Quality checks (ubuntu, agentapi)	1m 4s
Go Quality checks (ubuntu, contractsapi)	13s
Go Quality checks (ubuntu, mocks)	52s
Go Quality checks (ubuntu, storeapi/go-wrapper/microsoftstore)	22s
Go Quality checks (ubuntu, windows-agent)	1m 4s
Go Quality checks (ubuntu, wsl-pro-service)	54s
Go Quality checks (ubuntu, common)	30s
Go Quality checks (windows, agentapi)	6m 36s
Go Quality checks (windows, contractsapi)	1m 14s
Go Quality checks (windows, mocks)	3m 44s
Go Quality checks (windows, storeapi/go-wrapper/microsoftstore)	2m 27s
Go Quality checks (windows, windows-agent)	1m 52s
Go Quality checks (windows, end-to-end)	3m 2s
Go Quality checks (windows, common)	1m 48s
C++ Quality Checks	2m 32s
gRPC files are up to date (agentapi)	1m 26s
gRPC files are up to date (wslserviceapi)	1m 10s
Flutter Quality checks (ubuntu, gui/packages/p4w_ms_store)	1m 36s
Flutter Quality checks (ubuntu, gui/packages/ubuntupro)	3m 34s
Flutter Quality checks (windows, gui/packages/p4w_ms_store)	2m 41s
Flutter Quality checks (windows, gui/packages/ubuntupro)	5m 33s
Build Windows Agent Appx	9m 34s
Run Go tests with mocks (ubuntu, windows-agent)	4m 21s
Run Go tests with mocks (ubuntu, wsl-pro-service)	3m 7s
Run Go tests with mocks (windows, storeapi/go-wrapper/microsoftstore)	2m 32s
Run Go tests with mocks (windows, windows-agent)	5m 0s
Run Go tests with mocks (windows, common)	1m 34s
Build wsl-pro-service debian package	3m 30s
	1h 25m 42s

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