Update Benchmark CI to use another repo

[ahmedihabb2]

Description

Now benchmark CI pushes the results to another repo to keep track of benchmark history and to keep the main repo clean

Changelog

• Download the previous benchmark results removed as we do not need cache anymore as we compare with previous results from the other repo

• Output directory changed as when it was /bench/matrix.os, the benchmark action will search for previous results in /bench directory, although we store them directly on the repo using matrix.os in order to access them using metacall.github.io/benchmarks/ubuntu-latest not metacall.github.io/benchmarks/bench/ubuntu-latest

• Add github-token to allow the action pull the specified repo

• Remove skip-fetch-gh-pages to allow the action fetching the specified repo and compare with the previous results

• You will need to replace any occurrence of ahmedihabb2/benchmarks with the Metacall benchmarks repo that we will store benchmarks results in it.

Create Private Access token

• Click on your profile pic in the top right corner
• Choose settings
• Scroll down and choose developer settings from the right menu
• Choose Personal access token and click on Tokens (Classic)
• Click on Generate new token
• Specify expiration and select the repo option and this will give the token read and write access to repos
• Copy the token then go to the repo setting and create a secret called PUSH_TOKEN and put the copied token as a value for the secret
• Now everything should work fine

[viferga]

@ahmedihabb2 it works like a charm