[js][tc] move toolchain typings to its own helpers file, fix #143

conda/js/src/components/toolchain/GraphicalEditor.jsx

conda/js/src/components/toolchain/InsertObjectModal.jsx

conda/js/src/components/toolchain/ToolchainBlock.jsx

conda/js/src/components/toolchain/ToolchainConnection.jsx

conda/js/src/components/toolchain/ToolchainEditor.jsx

conda/js/src/components/toolchain/ToolchainEditor.spec.jsx

conda/js/src/components/toolchain/index.js

conda/js/src/helpers/beat.js

conda/js/src/helpers/toolchainTypes.js