Rework error handling for synchronous file system module API

Currently the error handling for the synchronous file system module API is performed via optional error callbacks that are passed as last parameter to the respective "sync" method. This approach is rather unconventional and unintuitive:

file.writeTextSync("some text", (err) => console.log(err));

Rework the error handling logic for the "sync" methods to be similar to the nodejs approach with try...catch blocks:

try {
    file.writeTextSync("some text");
} catch (err) {
    console.log(err);
}

Related to https://github.com/NativeScript/docs/issues/1111

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Start with the synchronous file-system module API, especially the writeTextSync entry point shown in the issue, and inspect how sync methods currently consume their final error callbacks. Review the related tests and the Node.js fs behavior before checking each sync method. Done means sync methods no longer require optional error callbacks and failures are handled through try...catch-compatible errors.