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>

mods/fabric-api.pw.toml

@@ -0,0 +1,13 @@
+name = "Fabric API"
+filename = "fabric-api-0.97.3+1.20.4.jar"
+side = "both"
+
+[download]
+url = "https://cdn.modrinth.com/data/P7dR8mSH/versions/BPX6fK06/fabric-api-0.97.3%2B1.20.4.jar"
+hash-format = "sha512"
+hash = "ea1e47672a1e0fef7fa3fd7f7b396b5a8fb2c46e6ce33dbc4cc2b8d320bc7b775a0de42a478302419c8063c47fbc18bb2ad7551772f54af8059132ac2cb4f108"
+
+[update]
+[update.modrinth]
+mod-id = "P7dR8mSH"
+version = "BPX6fK06"

mods/webstreamer.pw.toml

@@ -0,0 +1,13 @@
+name = "WebStreamer"
+filename = "webstreamer-1.5.0.jar"
+side = "both"
+
+[download]
+url = "https://cdn.modrinth.com/data/IdNyYbFO/versions/ondpQ8lg/webstreamer-1.5.0.jar"
+hash-format = "sha512"
+hash = "05d94aeae2e9f1beebfde98d69ab9f5732654437181a3666a142a89ca40dfbaa22a61c0e1d6605c086449ddf5eb580566876cc84fe370f98f6a60c95ae75155a"
+
+[update]
+[update.modrinth]
+mod-id = "IdNyYbFO"
+version = "ondpQ8lg"