Add composer.libraries.json to the 8.x-1.x branch

I added the composer.libraries.json file and added the repo in the local composer.json file and worked as expected, moving this to "Needs Review" just in case anyone wants to review this (and get some credits!):

./composer.json has been updated
Running composer update infusion/infusion
Loading composer repositories with package information
Updating dependencies
Lock file operations: 1 install, 0 updates, 0 removals
  - Locking infusion/infusion (2.0.0)
Writing lock file
Installing dependencies from lock file (including require-dev)
Package operations: 1 install, 0 updates, 0 removals
  - Downloading infusion/infusion (2.0.0)
  - Installing infusion/infusion (2.0.0): Extracting archive
Generating autoload files
93 packages you are using are looking for funding.
Use the `composer fund` command to find out more!
phpstan/extension-installer: Extensions installed
No security vulnerability advisories found.
Using version ^2.0 for infusion/infusion

OK I will merge this to the 8.x-1.x branch, if anyone has any suggestions, please let me know.

Automatically closed - issue fixed for 2 weeks with no activity.