* Rename the `wasm2asm` tool to `wasm2js` This commit performs a relatively simple rename of the `wasm2asm` tool to `wasm2js`. The functionality of the tool doesn't change just yet but it's intended that we'll start generating an ES module instead of just an `asm.js` function soon. * wasm2js: Support `*.wasm` input files Previously `wasm2js` only supported `*.wast` files but to make it a bit easier to use in tooling pipelines this commit adds support for reading in a `*.wasm` file directly. Determining which parser to use depends on the input filename, where the binary parser is used with `*.wasm` files and the wast parser is used for all other files. * wasm2js: Emit ESM imports/exports by default This commit alters the default behavior of `wasm2js` to emit an ESM by default, either importing items from the environment or exporting. Items like initialization of memory are also handled here.