Add chunk plan cache configuration and storage

internal/framework/pipeline/chunk_cache_test.go

@@ -0,0 +1,20 @@
+package pipeline
+
+import "testing"
+
+func TestParseChunkCacheMode(t *testing.T) {
+	for _, value := range []ChunkCacheMode{ChunkCacheAuto, ChunkCacheBypass, ChunkCacheRefresh} {
+		got, err := ParseChunkCacheMode(string(value))
+		if err != nil || got != value {
+			t.Fatalf("ParseChunkCacheMode(%q) = %q, %v", value, got, err)
+		}
+		if err := value.Validate(); err != nil {
+			t.Fatalf("%q.Validate() error = %v", value, err)
+		}
+	}
+	for _, value := range []string{"", "enabled", "AUTO", "auto,refresh"} {
+		if _, err := ParseChunkCacheMode(value); err == nil {
+			t.Fatalf("ParseChunkCacheMode(%q) error = nil, want error", value)
+		}
+	}
+}