Implement push rule evaluation in Rust. (#13838)

changelog.d/13838.misc

rust/Cargo.toml

rust/benches/evaluator.rs

rust/benches/glob.rs

rust/build.rs

rust/src/push/base_rules.rs

rust/src/push/evaluator.rs

rust/src/push/mod.rs

rust/src/push/utils.rs

stubs/synapse/synapse_rust/push.pyi

synapse/push/bulk_push_rule_evaluator.py

synapse/push/httppusher.py

synapse/push/push_rule_evaluator.py

tests/push/test_push_rule_evaluator.py