Add more fighting styles

[Daniel-Soham]

Is your feature request related to a problem? Please describe.
Because of the increased flexibility of this system, it seems like more classes have access to fighting styles and the option to choose fighting styles more often if they desire. Also in class features there is description of choosing a fighting style in a theme. I think more fighting styles would be nice especially ones fitting additional themes. For those with mixed magical and martial abilities there could also be fighting styles taking advantage of that combination.

Describe the solution you'd like
While fighting styles currently cover a range of bonuses such as providing defense, offense, and debuffing/control, there are currently none that provide mobility for example.

One could for instance make an air and skirmish themed fighting style where if one hits a target with an attack they get a free disengage and a bonus to hit their next different target.

One could also make a fighting style, perhaps animal, sand, and earth themed, based on taking advantage of difficult terrain where you are not negatively affected by it and you can cause others to fall prone in it.

[mlenser]

Feel free to provide suggestions.