redis compression (#6769)

* feat(labrinth): encode/decode redis values with postcard, add version in namespaces

* chore(labrinth): split cache ex special cases without version

* chore(labrinth): simplify get_many

* fix: tombi

* feat(labrinth): compression support

* chore(labrinth): cleanup redis ser/de

* fix(labrinth): use get_deserialized in tests

Cargo.toml

@@ -118,6 +118,12 @@ lettre = { version = "0.11.19", default-features = false, features = [
   "tokio1",
   "tokio1-rustls",
 ] }
+lz4_flex = { version = "0.11.5", default-features = false, features = [
+  "checked-decode",
+  "safe-decode",
+  "safe-encode",
+  "std",
+] }
 maxminddb = "0.26.0"
 meilisearch-sdk = { version = "0.30.0", default-features = false }
 modrinth-content-management = { path = "packages/modrinth-content-management" }
@@ -135,6 +141,7 @@ paste = "1.0.15"
 path-util = { path = "packages/path-util" }
 phf = { version = "0.13.1", features = ["macros"] }
 png = "0.18.0"
+postcard = { version = "1.1.3", default-features = false, features = ["alloc"] }
 proc-macro2 = { version = "1.0" }
 prometheus = "0.14.0"
 quartz_nbt = "0.2.9"