Octopus Pallets v0.9.18

What's Changed

• Add function in build.rs for auto get version by @anonymousGiga in #43
• support nft and refactor benchmarking by @anonymousGiga in #44
• refactor support nft by @anonymousGiga in #45
• update tests and benchmarks by @anonymousGiga in #46
• Add storage migration for appchain-pallet by @anonymousGiga in #49
• Add sequence for mint asset by @anonymousGiga in #50
• Rename asset_name to token_id(it's an account ID on NEAR) by @en in #51
• Add convertor for support rmrk base metadata to nep171 by @anonymousGiga in #52
• Add CI by @DaviRain-Su in #55
• Add delete for AssetIdByTokenId by @anonymousGiga in #54
• support unified account by @en in #56

Full Changelog: v0.9.13...v0.9.18