fix(ui5-tooling-transpile): add support for d.ts source maps

[petermuessig]

Adding d.ts.map support to allow to "Go to Sources Definition" in VSCode. We need to post-process the d.ts.map to correct the source mapping to the sources of the project. Due to the virtual paths, this doesn't work automatically.

With this fix, we are in general switching back to using types in the tsconfig.json. The typeRoots seem to work semi-optimal in case of using dependencies as the typeRoots are scanning the given folder and its subfolders for index.d.ts files. Using types the NPM package needs to provide the types mapping to the index.d.ts file in the package.json but in general we do not run into the TS2688 issue when running type checking. With the solution using types all scenarios are working fine now. Once a custom type is being added it requires to list the openui5 and the custom types of the library next to it.