Nelson 0.4.4 available in winget (#853)

* Nelson 0.4.4 available in winget

* rename file extension

manifests/NelsonNumericalSoftware/Nelson/0.4.4.yaml

@@ -0,0 +1,17 @@
+Id: NelsonNumericalSoftware.Nelson
+Publisher: Nelson Numerical Software
+Author: Allan CORNET
+AppMoniker: nelson
+Name: Nelson
+Version: 0.4.4
+License: Open Source license LGPLv2
+LicenseUrl: https://raw.githubusercontent.com/Nelson-numerical-software/nelson/master/LICENSE
+Description: Nelson is an array programming language providing a powerful open computing environment for engineering and scientific applications using modern C/C++ libraries (Boost, Eigen, …) and others state of art numerical libraries.It has sophisticated data structures (including cell, struct, linear systems, …), an interpreter and a high level programming language. Nelson has been developped to be an open/modular system where an user can define these own data types and operations on these data types by using overload.
+Homepage: https://nelson-numerical-software.github.io/nelson-website/
+Tags: "matrix,data,interpreter,language,programming,scientific"
+FileExtensions: nls, nlf, nh5, mat, hdf5
+InstallerType: inno
+Installers:
+  - Arch: x64
+    Url: https://github.com/Nelson-numerical-software/nelson/releases/download/v0.4.4/Nelson-0.4.4.2521-x86-64.exe
+    Sha256: 865d8638eeaae7af105e3b4eec3428d533e5ad1359811b1d701c1258b20d1eb7