Closes to #5
Add `common-documentation/linux/charsets.go` with an array of `EnumString`s using `docvalues.CreateEnumStringWithDoc` function.
* Create a new file `charsets.go` in the `common-documentation/linux` directory.
* Import the `docvalues` package.
* Create an array of `EnumString`s using `docvalues.CreateEnumStringWithDoc` function.
* Include the charsets and their documentation as specified in the issue description.
* List each valid charset into its own enum, ensuring correct interpretation (e.g., "ascii" instead of "ASCII", "koi8r", "utf8", "iso8859-1").
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`.
Related to #1
Add documentation for adfs, affs, and debugfs filesystem mount options.
* **common-documentation/filesystems/mountoptions/adfs.go**
- Add documentation for adfs filesystem options including uid, gid, ownmask, and othmask.
* **common-documentation/filesystems/mountoptions/affs.go**
- Add documentation for affs filesystem options including uid, gid, setuid, setgid, mode, and other options.
* **common-documentation/filesystems/mountoptions/debugfs.go**
- Add documentation for debugfs filesystem options including uid, gid, and mode.
* **handlers/fstab/documentation/documentation-mountoptions.go**
- Update to include the new mount options for adfs, affs, and debugfs filesystems.
- Add entries for adfs, affs, and debugfs in the `MountOptionsMapField`.
* **common.go**
- Add common constants like "zero" to common-documentation/filesystems/mountoptions/common.go.
