## Description
Use paths package to trim unescaped trailing '/' characters from input for Exchange mail and OneDrive folder names. Add tests for Exchange showing that the trimming also works properly if the folder name ends with '/'.
## Type of change
<!--- Please check the type of change your PR introduces: --->
- [ ] 🌻 Feature
- [x] 🐛 Bugfix
- [ ] 🗺️ Documentation
- [ ] 🤖 Test
- [ ] 💻 CI/Deployment
- [ ] 🐹 Trivial/Minor
## Issue(s)
* closes#1147
## Test Plan
<!-- How will this be tested prior to merging.-->
- [x] 💪 Manual
- [x] ⚡ Unit test
- [ ] 💚 E2E
Adds a processor that confirms whether user has
added a value for a flag in the cmd, or if it is the
default value. This map of valued flags is added
to the service opts structs to for validation.
Also migrates many service flags to utils as
consts so that these values can be maintained
as consistent across packages.