Add the encounter building rules from MCDM's 'Flee, Mortals!' book as an alternative RPGSystem to provide more accurate encounter difficulty assessment, particular for use with the monsters from that book.
Changes Proposed
Add and register Dnd5eFleeMortalsRpgSystem
Checklist
[x] I have read the contribution guidelines and code of conduct.
[x] I have tested the changes locally and they are working as expected.
[x] I have added appropriate comments and documentation for the code changes.
[x] My code follows the coding style and standards of this project.
[x] I have rebased my branch on the latest main (or master) branch.
[x] All tests (if applicable) have passed successfully.
[x] I have run linters and fixed any issues.
[x] I have checked for any potential security issues or vulnerabilities.
Pull Request Description
Add the encounter building rules from MCDM's 'Flee, Mortals!' book as an alternative RPGSystem to provide more accurate encounter difficulty assessment, particular for use with the monsters from that book.
Changes Proposed
Dnd5eFleeMortalsRpgSystemChecklist