Related to #3
Add mount options for `devpts`, `fat`, `hfs`, and `hpfs` filesystems.
* **common-documentation/filesystems/mountoptions/devpts.go**
- Implement mount options for `devpts` filesystem.
- Export `DevptsDocumentationAssignable` and `DevptsDocumentationEnums` variables.
* **common-documentation/filesystems/mountoptions/fat.go**
- Implement mount options for `fat` filesystem.
- Export `FatDocumentationAssignable` and `FatDocumentationEnums` variables.
* **common-documentation/filesystems/mountoptions/hfs.go**
- Implement mount options for `hfs` filesystem.
- Export `HfsDocumentationAssignable` and `HfsDocumentationEnums` variables.
* **common-documentation/filesystems/mountoptions/hpfs.go**
- Implement mount options for `hpfs` filesystem.
- Export `HpfsDocumentationAssignable` and `HpfsDocumentationEnums` variables.
* **handlers/fstab/documentation/documentation-mountoptions.go**
- Add entries for `devpts`, `fat`, `hfs`, and `hpfs` filesystems in `MountOptionsMapField`.