Change log for FORTINET_FORTIWEB

Date Changes
2024-09-30 Enhancement:
- Added support to parse the new format of unparsed KV logs.
2024-01-09 - Added support for CEF format logs.
- Added a Grok pattern to match new format of CEF logs.
- Mapped "principal_hostnamne" to "principal.hostname".
- Mapped "principal.app" to "principal.application".
2023-05-18 - Newly created parser.