Init (#17)

* add basic gitignore

* init go mod

* add semrel and badges

* add error pkg

* added config pkg

* added main cmd structure

* return error on file not found and added log ids and messages

* add todo for error_creator.go

internal/errors/not_found.go

@@ -0,0 +1,27 @@
+package errors
+
+import "fmt"
+
+type NotFound interface {
+	error
+	IsNotFound()
+}
+
+type NotFoundError struct {
+	*CaosError
+}
+
+func ThrowNotFound(parent error, id, message string) error {
+	return &NotFoundError{createCaosError(parent, id, message)}
+}
+
+func ThrowNotFoundf(parent error, id, format string, a ...interface{}) error {
+	return ThrowNotFound(parent, id, fmt.Sprintf(format, a...))
+}
+
+func (err *NotFoundError) IsNotFound() {}
+
+func IsNotFound(err error) bool {
+	_, ok := err.(NotFound)
+	return ok
+}