mfusepy: add alternative extra to install from project's master branch

pyproject.toml

@@ -43,7 +43,8 @@ dependencies = [
 [project.optional-dependencies]
 llfuse = ["llfuse >= 1.3.8"]
 pyfuse3 = ["pyfuse3 >= 3.1.1"]
-mfusepy = ["mfusepy"]
+mfusepy = ["mfusepy >= 3.1.0, <4.0.0"]
+mfusepym = ["mfusepy @ git+https://github.com/mxmlnkn/mfusepy.git@master"]
 nofuse = []
 s3 = ["borgstore[s3] ~= 0.3.0"]
 sftp = ["borgstore[sftp] ~= 0.3.0"]