Added support for Fortification stacks above 20

[Zpooks]

Support for the new "fortification above 20" functionality being introduced in 3.26

Description of the problem being solved:

Added a new parse mod and introduced logic to handle setting this state.

Steps taken to verify a working solution:

• Added the custom modifier "3% increased attack speed per fortification above 20"
• Added the custom modifier "3% more evasion rating per fortification above 20"
• Added the custom modifier "3% more armour per fortification above 20"
• Added the custom modifier "3% More armour and evasion rating per fortification above 20"
• Added pre-configured armour (any of the armour/evasion rares are fine)
• Added pre-configured weapons (any is fine)
• Set the state "Are you fortified?" to true
• Verified no stat changes apply, as fortification caps at 20 by default
• Spec into Steadfast and verify that stat changes apply
• Manually set fortification to all values between 21-26 to verify that the correct stat changes apply
• Set fortification to any value above 26, no stat changes apply
• Set minimum fortification to different values in and out of bounds for below 20, over 20 and over max

Link to a build that showcases this PR:

https://pobb.in/N4nEwO7Elbt1

https://pobb.in/o5BovAH1plAg (Includes testing for hybrid armour/evasion values)