Add client side schema validation

[halfcrazy]

Added new validation routines to ensure client operations conform to the OVSDB schema before being sent to the server.

fix #160

[halfcrazy]

GitHub Actions failed too. Need #399 to be merged to fix checks. It is recommended to add a dependent bot to avoid security issues and pipeline outdated.

[halfcrazy]

ping @dave-tucker

[dave-tucker]

@halfcrazy sorry for the delay in reviewing this (and letting libovsdb CI get in the state it was).
I'll review the code properly later this week.
Would you mind adding a benchmark for api.Create as a seperate commit (ideally before these changes).
It would be good to understand how much overhead validation is adding.

[halfcrazy]

@halfcrazy sorry for the delay in reviewing this (and letting libovsdb CI get in the state it was). I'll review the code properly later this week. Would you mind adding a benchmark for api.Create as a seperate commit (ideally before these changes). It would be good to understand how much overhead validation is adding.

Add benchmark test in #414

My local benchstat

goos: linux
goarch: amd64
pkg: github.com/ovn-kubernetes/libovsdb/client
cpu: Intel(R) Core(TM) i5-9600K CPU @ 3.70GHz
                          │    bench1    │                bench2                │
                          │    sec/op    │    sec/op     vs base                │
APICreate/simple_model-4    16.58µ ± ∞ ¹   16.75µ ± ∞ ¹       ~ (p=1.000 n=3) ²
APICreate/complex_model-4   32.32µ ± ∞ ¹   37.47µ ± ∞ ¹       ~ (p=0.100 n=3) ²
geomean                     23.15µ         25.05µ        +8.24%
¹ need >= 6 samples for confidence interval at level 0.95
² need >= 4 samples to detect a difference at alpha level 0.05

                          │    bench1     │                bench2                 │
                          │     B/op      │     B/op       vs base                │
APICreate/simple_model-4    3.690Ki ± ∞ ¹   3.880Ki ± ∞ ¹       ~ (p=0.100 n=3) ²
APICreate/complex_model-4   9.208Ki ± ∞ ¹   9.774Ki ± ∞ ¹       ~ (p=0.100 n=3) ²
geomean                     5.829Ki         6.158Ki        +5.64%
¹ need >= 6 samples for confidence interval at level 0.95
² need >= 4 samples to detect a difference at alpha level 0.05

                          │   bench1    │                bench2                │
                          │  allocs/op  │  allocs/op   vs base                 │
APICreate/simple_model-4    35.00 ± ∞ ¹   38.00 ± ∞ ¹        ~ (p=0.100 n=3) ²
APICreate/complex_model-4   143.0 ± ∞ ¹   169.0 ± ∞ ¹        ~ (p=0.100 n=3) ²
geomean                     70.75         80.14        +13.27%
¹ need >= 6 samples for confidence interval at level 0.95
² need >= 4 samples to detect a difference at alpha level 0.05

[dave-tucker]

@halfcrazy github decided to close this since I merged #414 🤦
please could you re-open 😆

[halfcrazy]

@halfcrazy github decided to close this since I merged #414 🤦 please could you re-open 😆

OK, i will open a new pr.

[halfcrazy]

#415