fix: strip onvif: namespace prefix from XML struct tags for correct unmarshaling

Go's encoding/xml does not match namespace prefixes in struct tags —
it matches full namespace URIs. The tags `xml:"onvif:Encoding"` never
matched camera responses like `<tt:Encoding>H264</tt:Encoding>` where
tt maps to http://www.onvif.org/ver10/schema, causing all response
fields (Encoding, Resolution, BitrateLimit, etc.) to unmarshal as
zero values.

Removing the prefix lets Go match by local name regardless of the
namespace prefix the camera uses (tt:, onvif:, or none).

Fixes: use-go#29
Fixes: use-go#52

Author: pavliha

device/types.go

@@ -238,7 +238,7 @@ type AddScopesResponse struct {
 //TODO: One or more repetitions
 type RemoveScopes struct {
 	XMLName   string     `xml:"tds:RemoveScopes"`
-	ScopeItem xsd.AnyURI `xml:"onvif:ScopeItem"`
+	ScopeItem xsd.AnyURI `xml:"ScopeItem"`
 }
 
 type RemoveScopesResponse struct {
@@ -545,7 +545,7 @@ type AddIPAddressFilterResponse struct {
 
 type RemoveIPAddressFilter struct {
 	XMLName         string                `xml:"tds:RemoveIPAddressFilter"`
-	IPAddressFilter onvif.IPAddressFilter `xml:"onvif:IPAddressFilter"`
+	IPAddressFilter onvif.IPAddressFilter `xml:"IPAddressFilter"`
 }
 
 type RemoveIPAddressFilterResponse struct {

ptz/types.go

@@ -252,8 +252,8 @@ type ModifyPresetTourResponse struct {
 type OperatePresetTour struct {
 	XMLName         string                       `xml:"tptz:OperatePresetTour"`
 	ProfileToken    onvif.ReferenceToken         `xml:"tptz:ProfileToken"`
-	PresetTourToken onvif.ReferenceToken         `xml:"onvif:PresetTourToken"`
-	Operation       onvif.PTZPresetTourOperation `xml:"onvif:Operation"`
+	PresetTourToken onvif.ReferenceToken         `xml:"PresetTourToken"`
+	Operation       onvif.PTZPresetTourOperation `xml:"Operation"`
 }
 
 type OperatePresetTourResponse struct {