Move root tsconfig.json into shared/ directory (fka scripts/)

[benjamn]

The root wryware package isn't really a TypeScript package needing tsc compilation, so it doesn't need its own tsconfig.json file.

TypeScript/VSCode gave me repeated warnings about the top-level tsconfig.json file, which exists only to centralize shared options for the various packages/*/tsconfig.json files, so I moved it into a subdirectory, where it can still be imported by other tsconfig.json files, but shouldn't cause any errors/warnings for the wryware package itself.