chore: move the go code into a subfolder

apps/api/internal/idp/provider.go

@@ -0,0 +1,51 @@
+package idp
+
+import (
+	"context"
+
+	"golang.org/x/text/language"
+
+	"github.com/zitadel/zitadel/internal/domain"
+)
+
+// Provider is the minimal implementation for a 3rd party authentication provider
+type Provider interface {
+	Name() string
+	BeginAuth(ctx context.Context, state string, params ...Parameter) (Session, error)
+	IsLinkingAllowed() bool
+	IsCreationAllowed() bool
+	IsAutoCreation() bool
+	IsAutoUpdate() bool
+}
+
+// User contains the information of a federated user.
+type User interface {
+	GetID() string
+	GetFirstName() string
+	GetLastName() string
+	GetDisplayName() string
+	GetNickname() string
+	GetPreferredUsername() string
+	GetEmail() domain.EmailAddress
+	IsEmailVerified() bool
+	GetPhone() domain.PhoneNumber
+	IsPhoneVerified() bool
+	GetPreferredLanguage() language.Tag
+	GetAvatarURL() string
+	GetProfile() string
+}
+
+// Parameter allows to pass specific parameter to the BeginAuth function
+type Parameter interface {
+	setValue()
+}
+
+// UserAgentID allows to pass the user agent ID of the auth request to BeginAuth
+type UserAgentID string
+
+func (p UserAgentID) setValue() {}
+
+// LoginHintParam allows to pass a login_hint to BeginAuth
+type LoginHintParam string
+
+func (p LoginHintParam) setValue() {}