feat(rpc): allow defaulting to v08 from cli argument

crates/pathfinder/src/bin/pathfinder/config.rs

@@ -351,6 +351,7 @@ impl Color {
 #[derive(clap::ValueEnum, Debug, Clone, Copy, PartialEq)]
 pub enum RootRpcVersion {
     V07,
+    V08,
 }
 
 #[derive(Debug, Clone, Copy, PartialEq)]

crates/pathfinder/src/bin/pathfinder/main.rs

@@ -247,6 +247,7 @@ Hint: This is usually caused by exceeding the file descriptor limit of your syst
 
     let default_version = match config.rpc_root_version {
         config::RootRpcVersion::V07 => pathfinder_rpc::RpcVersion::V07,
+        config::RootRpcVersion::V08 => pathfinder_rpc::RpcVersion::V08,
     };
 
     let rpc_server = pathfinder_rpc::RpcServer::new(config.rpc_address, context, default_version);