Custom Navmesh Handling

[suineg]

Often people have created meshes that have personal improvements or specific pulling paths. These might not be good enough for "official" and as such will get overwritten if they do an update. An update is not necessary all that often but it can be annoying.

Proposal - Folder or file name addendum that allows a personal navmesh to be loaded before the regular navmesh is. This could look like either of these options.

C:\Users\suineg\AppData\Local\VeryVanilla\Live\Release\MQ2Nav\custom\templeveeshantwo.navmesh
or
C:\Users\suineg\AppData\Local\VeryVanilla\Live\Release\MQ2Nav\templeveeshantwo-1.navmesh

Problem that arises is how to use meshgen on either file to generate or build. This is doable but how do you present that to the UI and make it flow well?