add core_count and threads_per_core options to launch templates

[Dmitry1987]

what

added core_count and threads_per_core options in order to run instances with no hyperthreading, for applications that need maximize single core performance (in some cases it's required).

why

the config option is available in the module but was not available in variables

references

https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/launch_template#example-usage

[Dmitry1987]

this is good stuff, why nobody wants to approve? 😅 for single threaded apps, very much required functionality actually...