add gocritic/ruleguard checks back again, cleanup code. (#13665)

- remove some duplicated code
- reported a bug, separately fixed in #13664
- using strings.ReplaceAll() when needed
- using filepath.ToSlash() use when needed
- remove all non-Go style comments from the codebase

Co-authored-by: Aditya Manthramurthy <donatello@users.noreply.github.com>

internal/event/rules.go

@@ -41,7 +41,7 @@ func NewPattern(prefix, suffix string) (pattern string) {
 		pattern += suffix
 	}
 
-	pattern = strings.Replace(pattern, "**", "*", -1)
+	pattern = strings.ReplaceAll(pattern, "**", "*")
 
 	return pattern
 }