NT;RE launch.json for Visual Studio 2022. Set the env variables accordingly & restart the IDE to use.

launch.vs.json

{
  "version": "0.2.1",
  "defaults": {},
  "configurations": [
    {
      "type": "dll",
      "exe": "${env.SDK2013MP}\\hl2.exe",
      "project": "CMakeLists.txt",
      "projectTarget": "client.dll (game\\client\\client.dll)",
      "name": "client.dll (game\\client\\client.dll)",
      "currentDir": "${env.SDK2013MP}",
      "args": [
        "-allowdebug",
        "-insecure",
        "-dev",
        "-sw",
        "-game",
        "${workspaceRoot}\\..\\game\\neo"
        "-neopath",
        "${env.OGNT_PATH}"
      ]
    }
  ]
}