Move the docstring, set the frame as a private function,
and set `MakeFace` to `False`.
Use user's home directory to create the file. Move the order of
the parameters of the function.
Remove the make function that creates the old object,
its corresponding Gui Command, and the old `DraftFillet.Fillet`
proxy class, which now is a redirection to the new `Fillet`
class defined in `draftobjects.fillet`.
Also change the unit test, and the `draft_test_object` script
to run `Draft.make_fillet`.
Also import it in the `Draft` namespace so that is available
as `Draft.make_arc_3points`.
Use this new function in the unit test `drafttests.test_creation`,
in the GuiCommand `draftguitools.gui_arcs`, and in the
`draft_test_objects` script.
The test script can be run by the program's executable
or run as a macro.
```
freecad draft_test_objects.py
```
It can also be used as a Python module within the program
to create a test file on demand.
```
import drafttests.draft_test_objects as dt
dt.create_test_file()
```
The produced test file will be added in a different commit
once this commit is merged.
The idea is to have a test file created by a certain
stable version of the master branch. Then as the code
continues to change and grow, this file can be opened
with future versions of the program to test for compatibility
and regressions.