Adding multi-os and multi-version signatures support

[aminya]

• Redesigned the bot
• using functions instead of macros for more stability
  • get the path to the example_script
  • automatic search for the script
    • combined the snooping methods together
• more stability for deactivation/activation
• Many new configurations and features such as:
• Multiple OS signature generation support
• Multiple Julia version support
• YAML file: creating one consolidated PR for all of the OS/Versions
• being resilient to the current directory
• accepting precompile root path
• accepting package path
• add optional exhaustive checker (try catch eval all)
• blacklist Main by default
• add SnoopCompile_ENV for skipping a test in SnoopCompile environment
• many error checks and warnings/info messages
• tests (bot tests pass locally)
• using GitHub actions for CI (except for docs)

Fixes #65
Fixes #55
Fixes #62
Fixes #76
Fixes #84
Fixes #80
Fixes #78

Review Tips

• I think running the tests is the easiest way for reviewing (test/bot.jl)
• This PR got huge over time. I can give a walkthrough in a Skype call if it is needed.

[aminya]

@timholy I decided to have a @static if should_precompile that we put all the precompile scripts inside.
This allows us just to set should_precompile to true or false which is much easier than commenting and uncommenting the lines of code.

https://github.com/aminya/SnoopCompile.jl/blob/d9513a7052b6a3c24cdd04d0c792850d9bb89969/src/bot/precompileInclude.jl#L192

However, to keep things clean, I am wondering if we can write the code in a separate file and then include it. But does @static work the same way inside that file as it was outside in the main file of a package?

The file can be something like src/precompile_includer.jl.

[aminya]

@timholy If you agree let's merge this into the master branch. This PR is so big, and managing it is getting out of the hands.

The only two remaining things are:

• the default value for tmin is still 0.0 in both @snoopi and BotConfig. We discussed it here:
  Improve bot docs and slim down the bot API aminya/SnoopCompile.jl#1 (comment)

• Parsing os and version from the yml file. I can add this in a separate PR.
  Improve bot docs and slim down the bot API aminya/SnoopCompile.jl#1 (comment)

By the way, don't forget to remove the Appveyor app from the settings

[timholy]

Tada! 🎆 Thank you for your patience and persistence!

[aminya]

Yay!

You're welcome!