Add config for debugging with VS Code

.Rbuildignore

@@ -32,3 +32,4 @@
 ^src/patch-to-libxls-upstream\.R$
 ^LICENSE\.md$
 ^\.vscode$
+^debug$

.vscode/c_cpp_properties.json

@@ -0,0 +1,23 @@
+{
+  "configurations": [
+    {
+      "name": "Mac",
+      "includePath": [
+        "${workspaceFolder}/**",
+        "/Users/jenny/Library/R/x86_64/4.1/library/cpp11/include",
+        "/Users/jenny/Library/R/x86_64/4.1/library/progress/include",
+        "/Library/Frameworks/R.framework/Resources/include",
+        "/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include",
+        "/usr/local/include"
+      ],
+      "macFrameworkPath": [
+        "/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks"
+      ],
+      "compilerPath": "/usr/bin/clang",
+      "cStandard": "c99",
+      "cppStandard": "c++11",
+      "intelliSenseMode": "macos-clang-x64"
+    }
+  ],
+  "version": 4
+}

.vscode/launch.json

@@ -0,0 +1,21 @@
+{
+  "version": "0.2.0",
+  "configurations": [
+    {
+      "name": "(lldb) Launch R  ",
+      "type": "lldb",
+      "request": "launch",
+      "program": "/Library/Frameworks/R.framework/Resources/bin/exec/R",
+      "args": [
+        "--vanilla",
+        "-e",
+        "source('debug/debug.R')"
+      ],
+      "env": {
+        "R_HOME" : "/Library/Frameworks/R.framework/Resources"
+      },
+      "terminal": "console",
+      "stopOnEntry": false
+    }
+  ]
+}