feat(BREAKING)!: flatten index key as finder arguments

[Kybxd]

• close Index(multi-col): improve usability of FindXXX APIs #135

Breaking change

Multiple-column index finder arguments are changed from the key struct to flattened params.

Go

// Previous
func (x *ItemConf) FindAwardItem(key ItemConf_Index_AwardItemKey) []*protoconf.ItemConf_Item {
    ...
}
// Current
func (x *ItemConf) FindAwardItem(id uint32, name string) []*protoconf.ItemConf_Item {
    ...
}

Cpp

// Previous
const Index_AwardItemVector* FindAwardItem(const Index_AwardItemKey& key) const;
// Current
const Index_AwardItemVector* FindAwardItem(uint32_t id, const std::string& name) const;

Add Map suffix when access underlying hash or ordered map

// Previous
const ItemConf::Index_AwardItemMap& ItemConf::FindAwardItem() const
// Current
const ItemConf::Index_AwardItemMap& ItemConf::FindAwardItemMap() const