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/error_test.go

@@ -0,0 +1,19 @@
+package errors_test
+
+import (
+	"errors"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+
+	caos_errors "github.com/caos/utils/errors"
+)
+
+func TestContains(t *testing.T) {
+	err := errors.New("hello world")
+	world := caos_errors.Contains(err, "hello")
+	assert.True(t, world)
+
+	mars := caos_errors.Contains(err, "mars")
+	assert.False(t, mars)
+}