Add linux support for vscode dev-setup

The ${env:XDG_DATA_HOME} variable is not used, as this variable resolves
to the current working directory within Visual Studio Code's development
container. By manually specifying the file path, it is possible to use
Visual Studio Code's development container.

The "mkdir" command uses the "-p" flag. This flag creates the parent
directories, as well. Should they already exists, the command moves
down to the next folder to create without throwing an error.

The "-r" parameter of the "cp" is required to recursively copy all
files and directories within the "publish" directory.

.vscode/tasks.json

@@ -7,7 +7,11 @@
       // jellyfin server's plugin directory
       "label": "build-and-copy",
       "dependsOrder": "sequence",
-      "dependsOn": ["build", "make-plugin-dir", "copy-dll"]
+      "dependsOn": [
+        "build",
+        "make-plugin-dir",
+        "copy-dll"
+      ]
     },
     {
       // Build the plugin
@@ -27,29 +31,45 @@
       "problemMatcher": "$msCompile"
     },
     {
-        // Ensure the plugin directory exists before trying to use it
-        "label": "make-plugin-dir",
-        "type": "shell",
-        "command": "mkdir",
+      // Ensure the plugin directory exists before trying to use it
+      "label": "make-plugin-dir",
+      "type": "shell",
+      "command": "mkdir",
+      "windows": {
         "args": [
-           "-Force",
-           "-Path",
-           "${config:jellyfinDataDir}/plugins/${config:pluginName}/"
+          "-Force",
+          "-Path",
+          "${config:jellyfinWindowsDataDir}/plugins/${config:pluginName}/"
         ]
+      },
+      "linux": {
+        "args": [
+          "-p",
+          "${config:jellyfinLinuxDataDir}/plugins/${config:pluginName}/"
+        ]
+      }
     },
     {
-        // Copy the plugin dll to the jellyfin plugin install path
-        // This command copies every .dll from the build directory to the plugin dir
-        // Usually, you probablly only need ${config:pluginName}.dll
-        // But some plugins may bundle extra requirements
-        "label": "copy-dll",
-        "type": "shell",
-        "command": "cp",
+      // Copy the plugin dll to the jellyfin plugin install path
+      // This command copies every .dll from the build directory to the plugin dir
+      // Usually, you probablly only need ${config:pluginName}.dll
+      // But some plugins may bundle extra requirements
+      "label": "copy-dll",
+      "type": "shell",
+      "command": "cp",
+      "windows": {
         "args": [
-           "./${config:pluginName}/bin/Debug/net6.0/publish/*",
-           "${config:jellyfinDataDir}/plugins/${config:pluginName}/"
+          "./${config:pluginName}/bin/Debug/net6.0/publish/*",
+          "${config:jellyfinWindowsDataDir}/plugins/${config:pluginName}/"
         ]
-
+      },
+      "linux": {
+        "args": [
+          "-r",
+          "./${config:pluginName}/bin/Debug/net6.0/publish/*",
+          "${config:jellyfinLinuxDataDir}/plugins/${config:pluginName}/"
+        ]
+      }
     },
   ]
-}
+}