Add CI workflow to lint and check formatting of Go code

[MatteoPologruto]

On every push and pull request that affects relevant files, check the repository's Go module for:

• Common detectable errors in the code.
• Use of outdated APIs
• Code style violations
• Code formatting inconsistency
• Misconfiguration

[umbynos]

@cmaglie could you please fix go:linterrors?

Error: D:\a\go-win32-utils\go-win32-utils\syscall_windows.go:237:6: exported type WndClass should have comment or be unexported
Error: D:\a\go-win32-utils\go-win32-utils\syscall_windows.go:250:6: exported type Point should have comment or be unexported
Error: D:\a\go-win32-utils\go-win32-utils\syscall_windows.go:255:6: exported type TagMSG should have comment or be unexported
Error: D:\a\go-win32-utils\go-win32-utils\syscall_windows.go:265:7: exported const WMQuit should have comment or be unexported
Error: D:\a\go-win32-utils\go-win32-utils\syscall_windows.go:267:7: exported const WsExDlgModalFrame should have comment or be unexported
Error: D:\a\go-win32-utils\go-win32-utils\syscall_windows.go:268:7: exported const WsExTopmost should have comment or be unexported
Error: D:\a\go-win32-utils\go-win32-utils\syscall_windows.go:269:7: exported const WsExTransparent should have comment or be unexported
Error: D:\a\go-win32-utils\go-win32-utils\syscall_windows.go:270:7: exported const WsExMDIChild should have comment or be unexported
Error: D:\a\go-win32-utils\go-win32-utils\syscall_windows.go:271:7: exported const WsExToolWindow should have comment or be unexported
Error: D:\a\go-win32-utils\go-win32-utils\syscall_windows.go:272:7: exported const WsExAppWindow should have comment or be unexported
Error: D:\a\go-win32-utils\go-win32-utils\syscall_windows.go:273:7: exported const WsExLayered should have comment or be unexported
Error: D:\a\go-win32-utils\go-win32-utils\syscall_windows.go:275:6: exported type GUID should have comment or be unexported
Error: D:\a\go-win32-utils\go-win32-utils\syscall_windows.go:282:6: exported type DevBroadcastDeviceInterface should have comment or be unexported
Error: D:\a\go-win32-utils\go-win32-utils\syscall_windows.go:298:7: exported const DeviceNotifyWindowHandle should have comment or be unexported
Error: D:\a\go-win32-utils\go-win32-utils\syscall_windows.go:299:7: exported const DeviceNotifySserviceHandle should have comment or be unexported
Error: D:\a\go-win32-utils\go-win32-utils\syscall_windows.go:300:7: exported const DeviceNotifyAllInterfaceClasses should have comment or be unexported
Error: D:\a\go-win32-utils\go-win32-utils\syscall_windows.go:302:7: exported const DbtDevtypeDeviceInterface should have comment or be unexported
Error: D:\a\go-win32-utils\go-win32-utils\syscall_windows.go:304:7: exported const PMNoRemove should have comment or be unexported
Error: D:\a\go-win32-utils\go-win32-utils\syscall_windows.go:305:7: exported const PMRemove should have comment or be unexported
Error: D:\a\go-win32-utils\go-win32-utils\syscall_windows.go:306:7: exported const PMNoYield should have comment or be unexported
Error: D:\a\go-win32-utils\go-win32-utils\syscall_windows.go:308:6: exported type WindowProcCallback should have comment or be unexported

[cmaglie]

Done, it must be rebased though.