* add interface for stats, d2 is an implementation
* fix incorrect comment, remove ennecessary int
* simplified description functions, remove duplicates
* moved default stringer functions
* fixed incorrect stat combine method
* change `Create` to `New` in method names
* d2stats + diablo2stats refactored again
- simplified `NewStat` provider function
- added initializer for stat values that sets the stringer functions, value types, and combination types for values when created
- removed redundant description functions
- added stat value combination types `sum` and `static`
`static` stat values which are not altered when stats are combined. this makes sense for stats like proc-on-hit or +skills to class
example:
Stat A: `10% reanimate as: skeleton mage`
Stat B: `8% reanimate as: skeleton archer`
Stat C: `6% reanimate as: skeleton archer`
A and B can not be combined
B and C can be combined to `14% reanimate as: skeleton archer`
* adding ranged number type, for use in stats
* Loaded Skills.txt
* asset manager only binds terminal commands if terminal != nil
* WIP stats
* cache getter and clear methods were not implemented
* asset manager handles a nil terminal pointer
* adding skilldesc.txt loader (needs work)
* ctc stat descriptions functions working
* moving description functionality out of itemstatcost loader and into stats
* stats seem like a central part of diablo, moving into d2core.
* stats seem like a central part of diablo, moving into d2core.
* delint
* adding statlist, statlist reduction, unit tests
* minor edits to stat.go
* lint error in statlist.go
* Remove dependency on actual data from mpq files
stats unit tests now use mock data
* fixing some lint errors, formatting
Co-authored-by: Maxime Lavigne (malavv) <duguigne@gmail.com>
