refactor: reuse the lua vm and pr-compile the lua code

[Zheaoli]

Fix: #693

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# Before

// BenchmarkRunFunction-16             6741            182470 ns/op          234715 B/op       1079 allocs/op
// BenchmarkRunFunction-16             7443            174567 ns/op          234710 B/op       1079 allocs/op
// BenchmarkRunFunction-16             7101            178651 ns/op          234711 B/op       1079 allocs/op
// BenchmarkRunFunction-16             6856            164739 ns/op          234722 B/op       1079 allocs/op
// BenchmarkRunFunction-16             6804            174768 ns/op          234713 B/op       1079 allocs/op

# After

// cpu: Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz
// BenchmarkRunFunction-16           152046              8494 ns/op           15283 B/op         42 allocs/op
// BenchmarkRunFunction-16           150916              7630 ns/op           15274 B/op         42 allocs/op
// BenchmarkRunFunction-16           149980              8467 ns/op           15292 B/op         42 allocs/op
// BenchmarkRunFunction-16           158834              7722 ns/op           15278 B/op         42 allocs/op
// BenchmarkRunFunction-16           118228              8482 ns/op           15292 B/op         42 allocs/op