Provide updated benchmarks

[ex-tag]

Provide updated benchmarks for 2022. These should be provided with each release, or yearly.

Would like to see benchmarks on routes (radix tree), middleware, and maybe binding.

No need to benchmark against 20 others, but would like to see the 3 most popular: Gin, Beego (or another) and Echo

[aldas]

Most recent number and some explanation https://github.com/labstack/echo/discussions/2143 To get comparable benchmark you should create list of requirements your application has - then create small application for each framework/library, with similar set of middlewares and routes and then do the benchmark.

[lammel]

I think we should add a dedicated web-benchmark project that compares numbers with a selected list of other frameworks and generated the requires numbers and screenshots that can be used for the README.

Otherwise I think just adding plain text output is an alternative to keep efforts low.

@ex-tag As this is a PR, are you planing on actually updating the benchmarks now in README?