[Epic] Convert cosmetic filters to flat buffer

[atuchin-m]

The goal is to put all the necessary structures to a flat buffer without using serde for Engine.
Expected profits:

• less memory (about -40%)
• less time to load the serialized rules for iOS.

The tasks:

• Flat containers #498
• Enable cosmetic filter benchmarks, add resources #500
• Flat container builders #507
• (to be continued)

[atuchin-m]

the current draft: #505
it optimize memory 18.8 MB => 10 MB
also it 3x speedup deserialization