add rstudio devcontainer for codespaces

.devcontainer/devcontainer.json

@@ -0,0 +1,49 @@
+// Codespace
+// This codespace contains R and a port for an Rstudio server in case 
+// that is the preferred IDE over VSCode.
+{
+	"name": "R (rocker/tidyverse)",
+   	"image": "ghcr.io/rocker-org/devcontainer/tidyverse:4.3",
+
+	"features": {
+		"ghcr.io/rocker-org/devcontainer-features/quarto-cli:1": {},
+		"ghcr.io/rocker-org/devcontainer-features/apt-packages:1": {
+            	"packages": "make,gcc,g++,cmake,clang-tidy,clang-format"
+		},
+	    	"ghcr.io/rocker-org/devcontainer-features/r-packages:1": {
+			"packages": "cli,rlang,usethis,devtools,ggplot2,remotes,pak",
+			"installSystemRequirements": true
+		}
+	},
+	"customizations": {
+	  "vscode": {
+		  "settings": {
+			"r.rterm.linux": "/usr/local/bin/radian",
+			"r.bracketedPaste": true,
+			"r.plot.useHttpgd": true,
+			"[r]": {
+			  "editor.wordSeparators": "`~!@#%$^&*()-=+[{]}\\|;:'\",<>/?"
+			}
+		  },
+		  "extensions":[
+			"GitHub.codespaces",
+			"hbenl.vscode-test-explorer",
+			"reditorsupport.r",
+			"rdebugger.r-debugger",
+			"ms-vsliveshare.vsliveshare",
+			"mathematic.vscode-pdf"
+			]
+	  }
+	},
+	  "forwardPorts": [8787],
+	  "portsAttributes": {
+		"8787": {
+			"label": "Rstudio",
+			"requireLocalPort": true,
+			"onAutoForward": "ignore"
+		}
+	  },		  
+	  "postAttachCommand": "sudo rstudio-server start",
+	  "remoteUser": "rstudio"
+
+}