feat: Add malysis cache implementation with proxy flow integration (#346)

* feat: Add malysis cache implementation with proxy flow integration

* fix: Code review fixes

cmd/setup/cache_test.go

@@ -0,0 +1,25 @@
+package setup
+
+import (
+	"bytes"
+	"context"
+	"testing"
+
+	"github.com/safedep/pmg/config"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func TestRunCache_NoFile(t *testing.T) {
+	t.Setenv("PMG_CACHE_DIR", t.TempDir())
+	config.Reload()
+	cfg := config.Get()
+
+	var out bytes.Buffer
+	require.NoError(t, runCacheStatus(context.Background(), cfg, &out))
+	assert.Contains(t, out.String(), "Entries: 0")
+
+	out.Reset()
+	require.NoError(t, runCacheClear(context.Background(), cfg, &out))
+	assert.Contains(t, out.String(), "already empty")
+}