feat(main): add recursive parsing for included idls

[ilatovsky]

Recursively resolve and parse included files.

[ilatovsky]

@kevin-greene-ck review please

[ramakrishna-battala-ck]

Would like to give a little flexibility to the way we import idls from either a relative path or absolute path from the sourceDir.

                let includePath = path.resolve(
                    parsedFile.includes[include].importedFrom,
                    parsedFile.includes[include].path,
                )
                if (!fs.existsSync(includePath)) {
                    includePath = path.resolve(
                        options.sourceDir,
                        parsedFile.includes[include].path,
                    )
                }

[ramakrishna-battala-ck]

Hey @ilatovsky sorry for the delay here. A huge thanks for this PR. Really helpful. Had a minor comment. Could you take a look at it.