BG suite: add multierror output with multiline print

This also rewords many error messages to make them consistent:
- capitalize BootGuard, Key Manifest and Boot Policy Manifest
- spell out Key Manifest and Boot Policy Manifest
- uppercase acronyms such as DMA etc

Signed-off-by: Daniel Maslowski <[email protected]>

cmd/bg-suite/cmd.go

@@ -51,7 +51,7 @@ func (e *execTestsCmd) Run(ctx *context) error {
 	ret := false
 	data, err := os.ReadFile(e.Firmware)
 	if err != nil {
-		return fmt.Errorf("can't read firmware file")
+		return fmt.Errorf("can't read firmware file %v", e.Firmware)
 	}
 	preset := test.PreSet{
 		Firmware:           data,

go.mod

@@ -29,6 +29,7 @@ require (
 	github.com/xaionaro-go/bytesextra v0.0.0-20220103144954-846e454ddea9
 	github.com/xaionaro-go/unhash v0.0.0-20230427202706-0195a574c620
 	github.com/xaionaro-go/unsafetools v0.0.0-20210722164218-75ba48cf7b3c
+	go.uber.org/multierr v1.11.0
 	golang.org/x/crypto v0.17.0
 	golang.org/x/exp v0.0.0-20230626212559-97b1e661b5df
 	gopkg.in/yaml.v3 v3.0.1

go.sum

@@ -472,6 +472,8 @@ go.uber.org/atomic v1.5.0/go.mod h1:sABNBOSYdrvTF6hTgEIbc7YasKWGhgEQZyfxyTvoXHQ=
 go.uber.org/multierr v1.1.0/go.mod h1:wR5kodmAFQ0UK8QlbwjlSNy0Z68gJhDJUG5sjR94q/0=
 go.uber.org/multierr v1.3.0/go.mod h1:VgVr7evmIr6uPjLBxg28wmKNXyqE9akIJ5XnfpiKl+4=
 go.uber.org/multierr v1.4.0/go.mod h1:VgVr7evmIr6uPjLBxg28wmKNXyqE9akIJ5XnfpiKl+4=
+go.uber.org/multierr v1.11.0 h1:blXXJkSxSSfBVBlC76pxqeO+LN3aDfLQo+309xJstO0=
+go.uber.org/multierr v1.11.0/go.mod h1:20+QtiLqy0Nd6FdQB9TLXag12DsQkrbs3htMFfDN80Y=
 go.uber.org/tools v0.0.0-20190618225709-2cfd321de3ee/go.mod h1:vJERXedbb3MVM5f9Ejo0C68/HhF8uaILCdgjnY+goOA=
 go.uber.org/zap v1.10.0/go.mod h1:vwi/ZaCAaUcBkycHslxD9B2zi4UTXhF60s6SWpuDF0Q=
 go.uber.org/zap v1.13.0/go.mod h1:zwrFLgMcdUuIBviXEYEH1YKNaOBnKXsx2IPda5bBwHM=