New package Jali - unstructured mesh infrastructure for multiphysics applications (#14498)

* add variant for enabling testing

* add variant for enabling testing

* enable tests and clean up other options

* enable tests and clean up other options

* add numbered versions

* add numbered versions

* updates to avoid enable_tests variant; correct versioning

* updates to avoid enable_tests variant; correct versioning

* fixes for style

* appropriate partitioners are enabled if 'all' is specified - so no need to check in spec

* revert accidental change to copyright

* remove erroneously re-introduced line about tests

* new spack recipe for build Jali - unstructured mesh infrastructure for multiphysics applications

* remove the +parallel condition for mstk, update 1.1.1 sha256sum and whitespace cleanup

* reformat description

* cut down description