Migrate to Criterion benchmark

[hackerchai]

https://github.com/bheisler/criterion.rs
More and more rust projects start to use criterion as the default benchark library for more specific performence statistics

[0xethsign]

The github actions for the current benchmark tool libtest runs only on the nightly toolchain.
The github actions for criterion.rs, https://github.com/boa-dev/criterion-compare-action/tree/move_to_actions runs only on the stable toolchain.
Before migrating to criterion, the previous benchmark tool needs to be removed, because builds are failing while comparing the last bench reports.

git checkout master
Previous HEAD position was 5f8f8b0 Merge 968da71db3f903d9ed108f2a1a039cfa650ed59c into 5ee0e109a2ca4b894a4486f4a1d83f1f2d70d483
Switched to a new branch 'master'
Branch 'master' set up to track remote branch 'master' from 'origin'.
cargo bench -- --save-baseline master
   Compiling num-traits v0.2.14
   Compiling rhai v0.19.15
   Compiling casbin v2.0.7 (/home/runner/work/casbin-rs/casbin-rs)
error[E0554]: `#![feature]` may not be used on the stable release channel
 --> benches/benchmark.rs:1:1
  |
1 | #![feature(test)]
  | ^^^^^^^^^^^^^^^^^

error: aborting due to previous error

ref - https://github.com/casbin/casbin-rs/pull/242/checks?check_run_id=2285035133

[0xethsign]

#250 adds this.