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/internal.go

@@ -0,0 +1,34 @@
+package errors
+
+import (
+	"fmt"
+)
+
+var (
+	_ Internal = (*InternalError)(nil)
+	_ Error    = (*InternalError)(nil)
+)
+
+type Internal interface {
+	error
+	IsInternal()
+}
+
+type InternalError struct {
+	*CaosError
+}
+
+func ThrowInternal(parent error, id, message string) error {
+	return &InternalError{createCaosError(parent, id, message)}
+}
+
+func ThrowInternalf(parent error, id, format string, a ...interface{}) error {
+	return ThrowInternal(parent, id, fmt.Sprintf(format, a...))
+}
+
+func (err *InternalError) IsInternal() {}
+
+func IsInternal(err error) bool {
+	_, ok := err.(Internal)
+	return ok
+}