embed vscode settings in newer supported section for devcontainer

.devcontainer/.vscode/settings.json

@@ -1,6 +0,0 @@
-{
-    "files.exclude": {
-        "**/*.o": true,
-        "**/.deps/": true
-    }
-}

.devcontainer/Makefile

@@ -1,5 +1,5 @@
 
-init: ../.vscode/c_cpp_properties.json ../.vscode/launch.json ../.vscode/settings.json
+init: ../.vscode/c_cpp_properties.json ../.vscode/launch.json
 
 ../.vscode:
 	mkdir ../.vscode
@@ -9,6 +9,3 @@ init: ../.vscode/c_cpp_properties.json ../.vscode/launch.json ../.vscode/setting
 
 ../.vscode/c_cpp_properties.json: ../.vscode
 	cp .vscode/c_cpp_properties.json ../.vscode/c_cpp_properties.json
-
-../.vscode/settings.json: ../.vscode
-	cp .vscode/settings.json ../.vscode/settings.json

.devcontainer/devcontainer.json

@@ -6,11 +6,21 @@
         "seccomp=unconfined",
     ],
     "forwardPorts": [9700],
-    "extensions": [
-        "ms-vscode.cpptools",
-        "ms-vsliveshare.vsliveshare",
-        "github.vscode-pull-request-github",
-    ],
+    "customizations": {
+        "vscode": {
+            "extensions": [
+                "ms-vscode.cpptools",
+                "ms-vsliveshare.vsliveshare",
+                "github.vscode-pull-request-github",
+            ],
+            "settings": {
+                "files.exclude": {
+                    "**/*.o": true,
+                    "**/.deps/": true,
+                }
+            },
+        }
+    },
     "mounts": [
         "type=volume,target=/data",
     ],