feat!: migrate from prost to buffa for protobuf codegen

Cargo.toml

@@ -48,6 +48,8 @@ async-channel = { version = "2.5.0", default-features = false, features = ["std"
 async-lock = { version = "3", default-features = false }
 async-trait = "0.1.89"
 base64 = { version = "0.22.1", default-features = false, features = ["alloc"] }
+buffa = { git = "https://github.com/anthropics/buffa", branch = "main", default-features = false, features = ["json"] }
+buffa-build = { git = "https://github.com/anthropics/buffa", branch = "main", default-features = false }
 bytemuck = { version = "1.22", default-features = false }
 bytes = { version = "1.5", default-features = false }
 chrono = { version = "0.4", default-features = false }
@@ -65,8 +67,6 @@ iai-callgrind = "0.16"
 itoa = "1"
 log = "0.4"
 portable-atomic = { version = "1", default-features = false, features = ["fallback"] }
-prost = { version = "0.14.3", default-features = false, features = ["std"] }
-prost-build = { version = "0.14.3", default-features = false }
 rand = "0.10"
 serde = { version = "1.0", features = ["derive", "rc"] }
 serde-big-array = "0.5"
@@ -116,6 +116,7 @@ async-channel = { workspace = true }
 async-lock = { workspace = true }
 async-trait = { workspace = true }
 base64 = { workspace = true }
+buffa = { workspace = true }
 bytes = { workspace = true }
 chrono = { workspace = true, features = ["clock"] }
 env_logger = { workspace = true }
@@ -126,7 +127,6 @@ itoa = { workspace = true }
 log = { workspace = true }
 moka = { version = "0.12.12", features = ["future"], optional = true }
 portable-atomic = { workspace = true }
-prost = { workspace = true }
 rand = { workspace = true }
 scopeguard = "1.2"
 serde = { workspace = true }