windows nushell stuff (#1105)

Sometimes I have to use windows, 

I would like to have a place were I can find useful nushell stuff making
my easier and maybe eventually copy stuff other people might contribute.

Would you see this fit?

**NOTE**: I will gladly remove editorconfig if you prefer a separate pr
or you don't want it at all.

custom-completions/windows/README.md

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+# windows completions
+
+Completions for [Windows](https://www.microsoft.com/en-gb/windows)
+
+## Usage
+
+```nushell
+use  windows-completions.nu *
+```
+
+Afterwards, when you enter `win` and then press tab, the available commands will be displayed.
+
+If you don't want to have all commands under the `win` prefix you could use the following instead.
+```nushell
+use windows-completions win *
+```
+

custom-completions/windows/windows-completions.nu

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+export module win {
+
+    # open in visual studio
+    export def "open in visual-studio" [file: path] {
+        let vswhere = $'($env."ProgramFiles(x86)")\Microsoft Visual Studio\Installer\vswhere.exe'
+        if not ($vswhere | path exists) { error make {msg: $"($vswhere) not found" } }
+
+        # https://github.com/microsoft/vswhere/wiki/Find-VC
+        let latest = ^$vswhere -latest | parse "{property}: {value}"
+        let installation_path = $latest | transpose --header-row | get installationPath.0
+        let vs = $'($installation_path)\Common7\IDE\devenv.exe'
+        if not ($vs | path exists) { error make {msg: $"($vs) not found" } }
+
+        run-external $vs /Edit ($file | path expand)
+    }
+
+    # file version and signature viewer from file
+    export def "read version" [file: path] {
+        ^sigcheck -nobanner $file | lines | skip 1 | parse --regex '\s*(?<name>.+?):(?<value>.+)'
+    }
+
+    # application for CPU spikes, unhandled exception and hung window monitoring cli tool
+    #
+    # https://learn.microsoft.com/en-us/sysinternals/downloads/procdump#using-procdump
+    #
+    # Examples:
+    #   Install ProcDump as the (AeDebug) postmortem debugger:
+    #   procdump -ma -i c:\dumps
+    #
+    #   Uninstall ProcDump as the (AeDebug) postmortem debugger:
+    #   procdump -u
+    export extern "procdump" [ ...args: any ]
+
+    # list logical disks somehing akin to unix's df command
+    export def "disk free" [] {
+        (wmic logicaldisk get deviceid,size,freespace,volumename,description | str trim
+            | detect columns
+            | insert Use% { ($in.freespace|into int) / ($in.size|into int) * 100 }
+        )
+    }
+
+}