feat(templ): ✨ added templ to command line that reads go template and outputs code

pkg/writers/template/errors.go

@@ -0,0 +1,50 @@
+package template
+
+import "fmt"
+
+// TemplateError represents an error that occurred during template operations
+type TemplateError struct {
+	Phase   string // "load", "parse", "execute"
+	Message string
+	Err     error
+}
+
+// Error implements the error interface
+func (e *TemplateError) Error() string {
+	if e.Err != nil {
+		return fmt.Sprintf("template %s error: %s: %v", e.Phase, e.Message, e.Err)
+	}
+	return fmt.Sprintf("template %s error: %s", e.Phase, e.Message)
+}
+
+// Unwrap returns the wrapped error
+func (e *TemplateError) Unwrap() error {
+	return e.Err
+}
+
+// NewTemplateLoadError creates a new template load error
+func NewTemplateLoadError(msg string, err error) *TemplateError {
+	return &TemplateError{
+		Phase:   "load",
+		Message: msg,
+		Err:     err,
+	}
+}
+
+// NewTemplateParseError creates a new template parse error
+func NewTemplateParseError(msg string, err error) *TemplateError {
+	return &TemplateError{
+		Phase:   "parse",
+		Message: msg,
+		Err:     err,
+	}
+}
+
+// NewTemplateExecuteError creates a new template execution error
+func NewTemplateExecuteError(msg string, err error) *TemplateError {
+	return &TemplateError{
+		Phase:   "execute",
+		Message: msg,
+		Err:     err,
+	}
+}