Clean up TypeScript Build Config

[tonyanziano]

Currently, the TypeScript compiler, tsc, is only called in 5 packages of the Emulator, yet there is a tsconfig.json file in every package.

There is also a discrepancy between the name of the build folder that each package outputs to:

sdk/client: /built/

sdk/shared: /build/

This could be simplified by removing unnecessary tsconfig.json files, moving global settings to the root tsconfig.json, and by aligning the configuration to use the same build folder in each package.