Add compilation_db to scons build to create compile_commands.json for automatic LSP configuration

[keks137]

by default my LSP cant find a bunch of stuff
since scons is an atypical build system I can't just use bear to generate the compile_command.json file for clangd
scons does however have a feature to generate the file itself, so I decided to add it
thought it might make sense to add this to the template itself, so that LSPs just work out of the box

[Ivorforce]

Hi @keks137, thank you for contributing!
godot-cpp based projects already have support for this feature, out of the box. The way you generate the file is:

scons compiledb=yes compile_commands.json

This is documented in the godot docs here, but it's hard to find - In the godot-cpp section, it's only subtly mentioned in the "Getting Started" document.

I have an open PR to the docs to make this more acessible; unfortunately it hasn't reached consensus yet.

[keks137]

oh ok thanks
maybe you could add it in some kind of (Optional) section or something to the Usage section in the Readme of this template
just so people like me can easily find it

[paddy-exe]

This can be closed now that #92 has been merged.