Implements a mix of #3 and #7

Adds a preset command which can be used to see available presets
Adds preset filters which can be used to specify item sub-categories within a preset
Removes SWORD_SMITH and RANGED_SMITH, as those are replaced by the RANGED and SWORD filters
Adds a list of usable filters for each preset

README.md

@@ -40,20 +40,54 @@ In addition to just being able to repair items, blacksmiths have some random fea
 
 - There is a chance that blacksmiths fail to repair an item, leaving it at about the same durability as before. Use
   failReforgeChance to control the chance. Set it to 0 to remove the feature.
-- There is a chance a blacksmith may add
+- There is a chance a blacksmith may add an enchantment to a reforged item. You can control the probability using
+  extraEnchantmentChance, and set the maximum number of enchantments using maxEnchantments
 
 ## Commands
 
-- /blacksmith <option> \[new value] - Changes a configuration option for the selected blacksmith (use Citizens' /npc
-  select first)
-- /blacksmithconfig <reload/option> \[new value] - Changes a default/global configuration value
+| Command | Arguments | Description |
+| --- | --- | --- |
+| /blacksmith | \<option> \[new-value] | Changes a configuration option for the selected blacksmith (use Citizens' /npc select first) |
+| /blacksmithconfig | \<reload/option> \[new-value] | Changes a default/global configuration value |
+| /preset | \<preset>\[:filter] | Displays all materials included in the given preset, after applying the filter if set |
 
-If a new value isn't specified, the current value is displayed instead.
+For /blacksmith and /blacksmithconfig, if a new value isn't specified, the current value is displayed instead.
 
 Note: basePrice, pricePerDurabilityPoint and enchantmentCost can be set like: `/blacksmithconfig option 4` or
 like `/blacksmithconfig option material/enchantment 4` depending on whether you are setting the default or an override
 for a specific material/enchantment.
 
+### Presets and filters:
+
+Note: All of these can be used when specifying reforge-able items, such as "preset:weapon-smith:bow,preset:armor_smith:
+gold,PRESET:TOOL_SMITH,shield"
+
+All currently supported presets, and available filters for each preset:
+
+- WEAPON_SMITH:
+    - BOW
+    - SWORD
+    - RANGED
+- ARMOR_SMITH:
+    - LEATHER
+    - IRON
+    - CHAINMAIL
+    - GOLD
+    - DIAMOND
+    - NETHERITE
+- TOOL_SMITH
+    - WOOD
+    - STONE
+    - IRON
+    - GOLD
+    - DIAMOND
+    - NETHERITE
+    - PICKAXE
+    - AXE
+    - HOE
+    - SHOVEL
+    - MISC
+
 ## Permissions
 
 | Permission node | Description |