Work Sys.IO.FileSystem samples

- Migrate solution to VS2022.
- Update target in packages config.

Author: josesimoes

samples/System.IO.FileSystem/BasicFileSystemExample/BasicFileSystemExample.sln

@@ -1,7 +1,6 @@
-
 Microsoft Visual Studio Solution File, Format Version 12.00
-# Visual Studio 15
-VisualStudioVersion = 15.0.28307.1300
+# Visual Studio Version 17
+VisualStudioVersion = 17.4.33213.308
 MinimumVisualStudioVersion = 10.0.40219.1
 Project("{11A8DD76-328B-46DF-9F39-F559912D0360}") = "BasicFileSystemExample", "BasicFileSystemExample.nfproj", "{2F085F9C-C2FC-4AF6-AD84-A6A1CBAF80D9}"
 EndProject

samples/System.IO.FileSystem/BasicFileSystemExample/packages.config

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="nanoFramework.CoreLibrary" version="1.14.2" targetFramework="netnanoframework10" />
-  <package id="nanoFramework.Runtime.Events" version="1.11.6" targetFramework="netnanoframework10" />
+  <package id="nanoFramework.CoreLibrary" version="1.14.2" targetFramework="netnano1.0" />
+  <package id="nanoFramework.Runtime.Events" version="1.11.6" targetFramework="netnano1.0" />
   <package id="nanoFramework.System.IO.FileSystem" version="1.1.23" targetFramework="netnano1.0" />
   <package id="nanoFramework.System.IO.Streams" version="1.1.38" targetFramework="netnano1.0" />
   <package id="nanoFramework.System.Text" version="1.2.37" targetFramework="netnano1.0" />

samples/System.IO.FileSystem/MountExample/packages.config

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="nanoFramework.CoreLibrary" version="1.14.2" targetFramework="netnanoframework10" />
-  <package id="nanoFramework.Runtime.Events" version="1.11.6" targetFramework="netnanoframework10" />
+  <package id="nanoFramework.CoreLibrary" version="1.14.2" targetFramework="netnano1.0" />
+  <package id="nanoFramework.Runtime.Events" version="1.11.6" targetFramework="netnano1.0" />
   <package id="nanoFramework.System.IO.FileSystem" version="1.1.23" targetFramework="netnano1.0" />
   <package id="nanoFramework.System.IO.Streams" version="1.1.38" targetFramework="netnano1.0" />
   <package id="nanoFramework.System.Text" version="1.2.37" targetFramework="netnano1.0" />