Rename "Firmware" menu entry to something else, move it to the top of the list along with settings.

[it9exm]

Reopening #7497
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I have read the contributing guide lines at https://github.com/opnsense/core/blob/master/CONTRIBUTING.md
I am convinced that my issue is new after having checked both open and closed issues at https://github.com/opnsense/core/issues?q=is%3Aissue

Is your feature request related to a problem? Please describe.

The meaning of the "Firmware" word is being misused for referring to the regular system updates, especially when running on a VM.

Describe the solution you like

Rename it to a word that's closer to what it actually represents.

Describe alternatives you considered

Hmm... System updates? Software updates? OS Updates?

Additional context

I also suggest to rearrange entries under System like this:

System Updates
Settings
Configuration
Access
Trust
Gateways
Routes
High Availability
Diagnostics
Log Files
Wizard