pack: initialise pack with base mods

These generally do not affect gameplay and the rest of the pack are
built upon this baseline.

mods/bettergrassify.pw.toml

@@ -0,0 +1,13 @@
+filename = 'BetterGrassify-1.8.2+fabric.1.21.10.jar'
+name = 'BetterGrassify'
+side = 'client'
+
+[download]
+hash = 'ad43e7a3040b3f103cae28e3f2067a7954419764231ac587baeb7352bd50b7371303abe1de420df42822695ee4ffc3eacb333b5995cfaa828ba2892506ab4255'
+hash-format = 'sha512'
+mode = 'url'
+url = 'https://cdn.modrinth.com/data/m5T5xmUy/versions/2C7y66BK/BetterGrassify-1.8.2%2Bfabric.1.21.10.jar'
+
+[update.modrinth]
+mod-id = 'm5T5xmUy'
+version = '2C7y66BK'