refactor: streamline file service retrieval and enhance spider template handling

- Replaced direct calls to getBaseFileFsSvc with a new method fs.GetBaseFileFsSvc in base_file.go for improved clarity and maintainability.
- Introduced SpiderTemplateService interface and implemented registry service for managing spider templates, enhancing template handling in the spider controller.
- Added template-related fields to the Spider model to support template functionality.
- Created utility functions for string case conversions in utils/string.go to facilitate consistent formatting across the codebase.
- Updated environment configuration to retrieve the Python path dynamically, improving flexibility in the task runner's setup.

core/utils/string.go

@@ -0,0 +1,23 @@
+package utils
+
+import (
+	"golang.org/x/text/cases"
+	"golang.org/x/text/language"
+	"strings"
+)
+
+func ToSnakeCase(s string) string {
+	s = strings.TrimSpace(s)
+	s = strings.ToLower(s)
+	s = strings.ReplaceAll(s, " ", "_")
+	s = strings.ReplaceAll(s, "-", "_")
+	return s
+}
+
+func ToPascalCase(s string) string {
+	s = strings.TrimSpace(s)
+	s = strings.ReplaceAll(s, "_", " ")
+	s = cases.Title(language.English).String(s)
+	s = strings.ReplaceAll(s, " ", "")
+	return s
+}