Launchpad v2 - Vending Minter

Launchpad v2 - Vending Minter Contract\n\nIn this new minter version parameteres can be set by governance through the vending factory contract, allowing all stakeholders to propose changes without new code uploads.\n\nFeatures:\n- Non Sequential Minting\n- Shuffle method (called by anyone with a fee)\n- Burn functionality directly from minter \n- Bugfixes and improvements\n\n\nThe source code is available at https://github.com/public-awesome/launchpad/releases/tag/v0.16.0\n\n\nCompile instructions\n\n```\ndocker run --rm -v "$(pwd)":/code \

--mount type=volume,source="$(basename "$(pwd)")_cache",target=/code/target
--mount type=volume,source=registry_cache,target=/usr/local/cargo/registry
cosmwasm/workspace-optimizer:v0.12.8\n\nThis results in the following SHA256 checksums:\n8730150b78a4765ffe0e27013e18e53f84cce99536ad7990d9e8cf937cfd0fc4 vending_minter.wasm\n\n# Verify on chain contract\nstarsd q gov proposal $id --output json
| jq -r '.content.wasm_byte_code'
| base64 -d
| gzip -dc
| sha256sum\n\n\n# Verify local contract\nsha256sum artifacts/vending_minter.wasm\n\n```\n