Customized FormKey lib generator for selected mods to include in Solution Patchers

[Deigue]

Builds up on the concept of : Mutagen.Bethesda.FormKeys

A nice-to-have / convenience feature for Patcher developers intending to make readable code for potentially complicated mods with several references back to certain records in a particular mod or subset of mods.

Some thoughts/points this would involve:

• A generate button somewhere around the New Solution Patcher in the Synthesis GUI , that lets the user generate FormKey database for particular mod(s)
• Selection configurability of mods from your personal load-order that the user may want to generate this db for. (Will need the state.LoadOrder , and of course exclude base game records that are already accounted in the above repo)
• Integrates this database and any dependency in the generated Visual Studio patcher project/soln.
• Possible GUI mandatory field might be nice, to show that this build/version of the patcher has a database generated against x version of the mod, so users will immediately have a visual indicator of some sort that certain patcher is potentially a bit outdated, and has a small chance not to work as intended.

Pros:

• Easier to write readable code for referential heavy mods.
• Probably easier to build more complicated patchers as well, owing to ease of use.

Cons:

• Potential breaking on mod updates. Patcher author responsibility to keep database update, or fallbacks to real FormKeys or null reference returns.

[Noggog]

Could in theory have Synthesis regenerate the files against the mod currently found in the load order. Since we're building the code before running things all while artificially updating the Mutagen nugets... regenerating that mapping file is feasible to throw in as well.

I feel like this could depend nicely on #65 , as the system would then know what mods a patcher thinks should exist. If we standardize where the FormKey mappings would reside in the project folder structure, then these systems can automatically "sync" the mappings as well