pack: add Waystones + Balm, bump to 0.16.0

Waystones 21.1.33: fast-travel teleport network.
Balm 21.0.58: required common lib for Waystones (and other BlayTheNinth mods).

Config will be tweaked in a follow-up after the server generates its
default config files. Intended config:
- worldgen village waystones DISABLED
- maxWaystonesPerPlayer = 1
- defaultPrivacy = Private (player-placed)
- OP-placed global waystones via /waystone command

pack/pack.lock.json

@@ -1,7 +1,7 @@
 {
   "$schema": "Brass-and-Sigil pack.lock.json - generated, do not edit by hand unless you know what you are doing",
   "name": "Brass and Sigil",
-  "version": "0.15.1",
+  "version": "0.16.0",
   "minecraft": "1.21.1",
   "loader": {
     "type": "neoforge",
@@ -459,6 +459,28 @@
       "sha1": "4d83e8a8e8cb06b306d2cea1e903680fe513f1f3",
       "size": 6869790,
       "side": "both"
+    },
+    {
+      "source": "modrinth",
+      "slug": "balm",
+      "versionId": "3XiinKbh",
+      "version": "21.0.58+neoforge-1.21.1",
+      "path": "mods/balm-neoforge-1.21.1-21.0.58.jar",
+      "url": "https://cdn.modrinth.com/data/MBAkmtvl/versions/3XiinKbh/balm-neoforge-1.21.1-21.0.58.jar",
+      "sha1": "47b6dbe51693d5a2b3eac15c6322f357de365f15",
+      "size": 701868,
+      "side": "both"
+    },
+    {
+      "source": "modrinth",
+      "slug": "waystones",
+      "versionId": "PXntW965",
+      "version": "21.1.33+neoforge-1.21.1",
+      "path": "mods/waystones-neoforge-1.21.1-21.1.33.jar",
+      "url": "https://cdn.modrinth.com/data/LOpKHB2A/versions/PXntW965/waystones-neoforge-1.21.1-21.1.33.jar",
+      "sha1": "488bc70db3730f209e65cbda04c36dbc3918c448",
+      "size": 878265,
+      "side": "both"
     }
   ],
   "defaultServer": {