pkg/must: add Must helper

Signed-off-by: varsha <varsha.narvi.07@gmail.com>

pkg/must/must_test.go

@@ -0,0 +1,25 @@
+// SPDX-FileCopyrightText: Copyright The Lima Authors
+// SPDX-License-Identifier: Apache-2.0
+
+package must
+
+import (
+	"errors"
+	"testing"
+
+	"gotest.tools/v3/assert"
+)
+
+func TestMustSuccess(t *testing.T) {
+	str := Must("string", nil)
+	assert.Equal(t, str, "string")
+}
+
+func TestMustPanic(t *testing.T) {
+	defer func() {
+		r := recover()
+		assert.Assert(t, r != nil, "Must should have panicked")
+	}()
+
+	Must("string", errors.New("test error"))
+}