Upgrade template to 10.9.x and .NET 8

.vscode/launch.json

@@ -7,7 +7,7 @@
             "name": "Launch",
             "request": "launch",
             "preLaunchTask": "build-and-copy",
-            "program": "${config:jellyfinDir}/bin/Debug/net6.0/jellyfin.dll",
+            "program": "${config:jellyfinDir}/bin/Debug/net8.0/jellyfin.dll",
             "args": [
                //"--nowebclient"
                "--webdir",

.vscode/tasks.json

@@ -59,17 +59,17 @@
       "command": "cp",
       "windows": {
         "args": [
-          "./${config:pluginName}/bin/Debug/net6.0/publish/*",
+          "./${config:pluginName}/bin/Debug/net8.0/publish/*",
           "${config:jellyfinWindowsDataDir}/plugins/${config:pluginName}/"
         ]
       },
       "linux": {
         "args": [
           "-r",
-          "./${config:pluginName}/bin/Debug/net6.0/publish/*",
+          "./${config:pluginName}/bin/Debug/net8.0/publish/*",
           "${config:jellyfinLinuxDataDir}/plugins/${config:pluginName}/"
         ]
       }
     },
   ]
-}
+}