- initial changes to the health/mana API
* added a helper function in Player for using maximum health- and mana-increasing items
* modified the AchivementHelper code in the event that achievements are enabled in the future
* added fields in Player indicating how many Life Crystals, Life Fruit and Mana Crystals they have consumed
* updated ExampleMod to account for the new API
! This PR is not complete.  UI still needs to be addressed as well as some other things.

- modified ExampleLifeFruit to better mimic how Life Fruits work

- better comment in ExampleLifeFruit

- better comment 2

- also modified all vanilla uses of checking if statLifeMax or statManaMax were above/below a certain number with checks for consumed item counts in order to properly account for the new API
- updated ExampleLifeFruitPlayer to account for the new API

…ng used

- removed ModifyBaseMaxStats, PreModifyMaxStats and PostModifyMaxStats in favor of a StatModifier hook
- made the setters for ConsumedLifeCrystals, ConsumedLifeFruit and ConsumedManaCrystals public for better API accessibility (a mod may want to just set these directly)
- added code to save/load ConsumedLifeCrystals, ConsumedLifeFruit and ConsumedManaCrystals

- changed ExampleLifeFruit's usage of ModifyMaxStats to be less confusing
- moved duplicated code to a PlayerLoader helper method, ResetMaxStatsToVanilla
- added Utils.Clamp usage
- clamped the values for the ConsumedLifeCrystals, ConsumeLifeFruit and ConsumedManaCrystals properties
- added/updated XML summaries

… still TODO)

- also removed the sets added to ItemID due to them not having a use
- updated ExampleMod with examples of drawing with an overlay for the Classic display set
- fixed a copy/paste typo

…operties in PlayerStatsSnapshot work

- all existing `ModResourceOverlay` hooks were converted into more "general" Resource hooks
- added `IResourceDrawSource` to `ResourceOverlayDrawContext`
- updated ExampleMod
- updated XML summaries

- added missing `IResourceDrawSource` classes for the panel drawing
- fixed a bug in `PlayerIO` which prevented the ConsumedX properties in Player to save properly
- deserializing `null` as a `TagCompound` actually results in an empty tag, so i added a proper check in `PlayerIO` for when the fallback system to load the ConsumedX properties should be used
- `ModResourceOverlay` and `ResourceOverlayLoader` API changes

…ter the max amount of fruits are used

- the `AmountOfHearts` property in `PlayerStatsSnapshot` was renamed to `AmountOfLifeHearts`
- added helper methods to `ResourceOverlayLoader` for drawing resources for modder convenience

… ExampleLifeFruit + added the sprite for ExampleManaCrystal

…mation and sound"

…d.HandlePacket to be more friendly to additional cases in the future

- made ExampleLifeFruit actually use its texture
- renamed VanillaHealthOverlay to VanillaLifeOverlay
- renamed the "ClassicHealthOverlay" image to "ClassicLifeOverlay"
- renamed the "FancyHealthOverlay_X" images to "FancyLifeOverlay_X"
- added ExampleManaCrystal
- added VanillaManaOverlay
- renamed ExampleLifeFruitPlayer to ExampleStatIncreasePlayer and moved it to `Common/Players`
- renamed ExampleLifeFruitSystem to ExampleStatIncreaseSystem and moved it to `Common/Systems`
- made VanillaLifeOverlay "replace" the bars from right to left
- fixed some bugs caused by `float` precision limits

- properly implemented PreDrawResourceDisplay and PostDrawResourceDisplay in the Fancy and Bars display sets
- expanded PlayerResourceSetsManager to include modded display sets
- updated XML summaries

…le for ModResourceDisplaySet

- moved the code reponsible for adding the modded display sets to `Main.ResourceSetsManager` to before `Mod.SetupContent()` is called so that they're available for use in `Mod.PostSetupContent()` and onwards
- made the Classic display set be "registered" after the Bars display set
- changed the logic of `PlayerResourceSetsManager.CycleResourceSet()` to go from first to last instead of last to first

- removed compound saving in PlayerIO in favor of a better alternative
- added code to save/load the ConsumedX properties directly

…since they're the vanilla values anyway

…Stats

- removed `ResourceSlotId` in favor of just checking asset instances
- added a new `ResourceStat` property to `ResourceOverlayDrawContext`
- fixed a bug that caused the display cycling to get stuck between Classic and Swapped Bars
- modified ExampleMod to account for the new changes
- updated XML comments

…ted fields in `ResourceDrawSettings`

- made `ResourceOverlayDrawContext.resourceNumber` start at 0 by default
- made the Bars panel drawing have `resourceNumber` start at -1
- added `ResourceIndexOffset` to `ResourceDrawSettings`
- actually tested the changed display set cycling code
- various bug fixes