chore: add VSCode extensions recommendations and update devcontainer configuration

.devcontainer/devcontainer.json

@@ -12,7 +12,19 @@
 	},
 
 	// Use 'forwardPorts' to make a list of ports inside the container available locally.
-	"forwardPorts": [6080, 5901],
+	"forwardPorts": [
+		6080,
+		5901
+	],
+	"customizations": {
+		"vscode": {
+			"extensions": [
+				"streetsidesoftware.code-spell-checker",
+				"EditorConfig.EditorConfig",
+				"dbaeumer.vscode-eslint"
+			]
+		}
+	},
 
 	// Use 'postCreateCommand' to run commands after the container is created.
 	// "postCreateCommand": "yarn install",

.vscode/extensions.json

@@ -0,0 +1,7 @@
+{
+    "recommendations": [
+        "streetsidesoftware.code-spell-checker",
+        "editorconfig.editorconfig",
+        "dbaeumer.vscode-eslint"
+    ]
+}