* feat: support basic webassembly debugging
Supports viewing, stepping through, and setting breakpoints in
webassembly (decompiled as WAT) in the editor. Includes a
basic tmLanguage for WAT.
Unfortunately we eagerly have to decompile WASM in order to get line
mappings to show e.g. in breakpoints. Location mapping is currently
mostly synchronous and I didn't want to make everything async
for webassembly. However, we don't keep the WAT source in memory,
instead request it again if it's needed. I opted to do this to reduce
memory usage for user applications that just happen to contain WASM
where they aren't always interested in debugging it.
For #1789Fixes#1715 on the way
* retain wasm-set breakpoints between reloads
72c0276263
