🔨 Restructure entire project logic

- Moved readers to the config package
- Added an option to read remote config files
- Moved the validation package to the config package and removed the validator dependency
- Moved the customerrors package to the config package
- Replaced fatih/color with jedib0t/go-pretty/v6/text
- Removed proxy check functionality
- Added param, header, cookie, body, and proxy flags to the CLI
- Allowed multiple values for the same key in params, headers, and cookies

types/key_value.go

@@ -0,0 +1,6 @@
+package types
+
+type KeyValue[K comparable, V any] struct {
+	Key   K
+	Value V
+}