Marketplace Contract v1

Description\n\nBy voting YES on this proposal, you agree to upload the Stargaze Markeplace V1 contract.\n\n\nUpdates in this version:\n- Bug fixes \n- 1% of trading fees part of Fair Burn will be sent to stakers instead of community pool.\n- Allow optional listing fee that can be set by governance\n- Allow operators to remove stale or invalid asks\n\n\nThe smart contract for Stargaze Marketplace V1. \n\n\nSource Code:\nhttps://github.com/public-awesome/marketplace/releases/tag/v1.0.0\n## Verifiying Contracts\n\n# download the contract from the proposal\nstarsd q gov proposal [proposal-number] -o json | jq -r .content.wasm_byte_code | base64 --decode > sg_marketplace.wasm.gz\n# decompress de contract\ngzip -d -c sg_marketplace.wasm.gz > sg_marketplace.wasm \n# checksum\nsha256sum sg_marketplace.wasm\n# clone the repo and checkout to the release\ngit https://github.com/public-awesome/marketplace.git\ncd marketplace\ngit checkout v1.0.0\n# compile and optimize contracts\ndocker run --rm -v "$(pwd)":/code \\n--mount type=volume,source="$(basename "$(pwd)")_cache",target=/code/target \\n--mount type=volume,source=registry_cache,target=/usr/local/cargo/registry \\ncosmwasm/workspace-optimizer:0.12.6\n# checksum \nsha256sum artifacts/sg_marketplace.wasm\n8e5f7b2f5e5aa7889bb212a9eada4464ce387ead43a72b8c1143edc3c41ff895 artifacts/sg_marketplace.wasm\n\n