Fix error while compiling rslib (#2187)

* protobuf generate error

pass --experimental_allow_proto3_optional to protoc
add missing dereive trait to struct Daylimit

* delete invalid derive trait Eq

* remove argument from protoc

--experimental_allow_proto3_optional

rslib/build/protobuf.rs

@@ -112,7 +112,7 @@ pub fn write_backend_proto_rs() {
         )
         .type_attribute(
             "Deck.Normal.DayLimit",
-            "#[derive(Copy, serde_derive::Deserialize, serde_derive::Serialize)]",
+            "#[derive(Copy, Eq, serde_derive::Deserialize, serde_derive::Serialize)]",
         )
         .type_attribute("HelpPageLinkRequest.HelpPage", "#[derive(strum::EnumIter)]")
         .type_attribute("CsvMetadata.Delimiter", "#[derive(strum::EnumIter)]")

rslib/src/import_export/text/mod.rs

@@ -22,7 +22,7 @@ pub struct ForeignData {
     updated_tags: Vec<String>,
 }
 
-#[derive(Debug, Clone, PartialEq, Eq, Default, Serialize, Deserialize)]
+#[derive(Debug, Clone, PartialEq, Default, Serialize, Deserialize)]
 #[serde(default)]
 pub struct ForeignNote {
     guid: String,