refactor: rename package errors to zerrors (#7039)

* chore: rename package errors to zerrors

* rename package errors to gerrors

* fix error related linting issues

* fix zitadel error assertion

* fix gosimple linting issues

* fix deprecated linting issues

* resolve gci linting issues

* fix import structure

---------

Co-authored-by: Elio Bischof <elio@zitadel.com>

internal/zerrors/internal.go

@@ -0,0 +1,46 @@
+package zerrors
+
+import (
+	"fmt"
+)
+
+var (
+	_ Internal = (*InternalError)(nil)
+	_ Error    = (*InternalError)(nil)
+)
+
+type Internal interface {
+	error
+	IsInternal()
+}
+
+type InternalError struct {
+	*ZitadelError
+}
+
+func ThrowInternal(parent error, id, message string) error {
+	return &InternalError{CreateZitadelError(parent, id, message)}
+}
+
+func ThrowInternalf(parent error, id, format string, a ...interface{}) error {
+	return ThrowInternal(parent, id, fmt.Sprintf(format, a...))
+}
+
+func (err *InternalError) IsInternal() {}
+
+func IsInternal(err error) bool {
+	_, ok := err.(Internal)
+	return ok
+}
+
+func (err *InternalError) Is(target error) bool {
+	t, ok := target.(*InternalError)
+	if !ok {
+		return false
+	}
+	return err.ZitadelError.Is(t.ZitadelError)
+}
+
+func (err *InternalError) Unwrap() error {
+	return err.ZitadelError
+}