Move powershell to posh

posh/Microsoft.PowerShell_profile.ps1

@@ -0,0 +1,23 @@
+# Add a SSH key to SSH-Agent
+function Add-Key {
+    if ($args.Count -gt 0) {
+        $filename = "$ENV:USERPROFILE\.ssh\id_ed25519_" + $args[0]
+        if (!(Test-Path $filename -PathType Leaf)) {
+            Write-Error "$filename does not exist."
+        }
+        else {
+            Invoke-Expression "ssh-add $filename"   
+        }
+    }
+    else {
+        Invoke-Expression "ssh-add -L"
+    }
+}
+
+$DotFilesPath = Join-Path $HOME '.dotfiles'
+$DotFilesAutodetect = $true
+$DotFilesAllowNestedSymlinks = $true
+
+Import-Module posh-git
+Import-Module oh-my-posh
+Set-Theme Paradox