refs https://linear.app/tryghost/issue/CORE-35/refactor-route-and-redirect-settings
refs 5715aa2155 (diff-48644be82a9b957e5e627bf7b0f2f73cdb1d63851ffad68c7c178c5886495bb8R52-R57)
- Simplified the yaml parser implementation to take in a single parameter, this move will allove to simplify the logic in the route settings + opens a door to unify handling with redirects yaml parsing!
- We loose the "filename" from the error information but that was a generic "routes.yaml" anyway and would be thrown only when somebody uploaded a routes.yaml file (no real added value).
- The debug statement should be moved to contain related filepath+other info to the calling module instead
- An additional error handler was borrowed from the redirects yaml parsing logic that was introduced in a referenced commit - it still makes sense to keep it for routes.yaml configuration