fix(xcaddy): use updated PATH after installing Go

xcaddy/install.ps1

@@ -23,6 +23,12 @@ $pkg_download = "$Env:USERPROFILE\Downloads\webi\$Env:WEBI_PKG_FILE"
 Write-Output "Checking for Go compiler..."
 IF (-Not (Get-Command -Name "go" -ErrorAction Silent)) {
     & "$Env:USERPROFILE\.local\bin\webi-pwsh.ps1" go
+    $Env:Path = "$HOME\.local\opt\go\bin;$Env:Path"
+    $Env:Path = "$HOME\go\bin;$Env:Path"
+    [System.Environment]::SetEnvironmentVariable(
+        "Path",
+        $env:Path,
+        [System.EnvironmentVariableTarget]::User)
 }
 
 # Fetch archive