Playground should provie downloadable links for .contract file, .json file and .wasm file

[achimcc]

Sometimes it can be usefull to have separate files for WASM and JSON defintions. It should be possible to create the .contract bundle out of the .json and .wasm file (?).

• [ ] Convert the download button to a overlay panel, similar to Settings and Sharing
• [ ] Provide three links/download buttons for .json, .wasm and .contract file
• [ ] Download button should be disabled when no downloadable files are available

[tubackkhoa]

You can check this similar project : https://github.com/oraichain/smart-studio

Demo: https://studio.orai.io