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/precondition_failed.go

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