Initialize packwiz modpack (Fabric 1.20.4)

- pack.toml: Pack metadata targeting Minecraft 1.20.4 + Fabric 0.15.11
- index.toml: File index with SHA256 hashes
- mods/fabric-api.pw.toml: Fabric API 0.97.3+1.20.4 (Modrinth)
- mods/webstreamer.pw.toml: WebStreamer 1.5.0 (Modrinth)
- README.md: Setup instructions for server and client

Co-authored-by: Cursor <cursoragent@cursor.com>

pack.toml

@@ -0,0 +1,14 @@
+[pack]
+name = "Bennett's Modded Server"
+author = "bee8333"
+version = "1.0.0"
+pack-format = "packwiz:1.1.0"
+
+[index]
+file = "index.toml"
+hash-format = "sha256"
+hash = "059360286df607e6a5ff35b8d719c0a8b5b753623f2d3dab3fb12f082c09f5cf"
+
+[versions]
+minecraft = "1.20.4"
+fabric = "0.15.11"