Add a setting to decide from which directory to run the recipes

[jlelong]

Related to #4747

This PR adds the new setting latex-workshop.latex.build.fromWorkspaceFolder to decide if the recipe is run from the toplevel workspace folder or from the root file directory.

[jlelong]

@James-Yu I am wondering why the build test suite is disabled

LaTeX-Workshop/test/suites/01_build.test.ts

Line 8 in 1975b8d

suite.skip('Build TeX files test suite', () => {

[James-Yu]

@James-Yu I am wondering why the build test suite is disabled

LaTeX-Workshop/test/suites/01_build.test.ts

Line 8 in 1975b8d

suite.skip('Build TeX files test suite', () => {

That was an intended skip. The new unit tests are (or are supposed to) cover all test cases in our old test suites, so the latter is disabled. I have not taken a look into the tests for a while. Todo list +1.