Rename vscode-boot to vscode-spring-boot

To avoid confusing prefix matching between patterns like
vscode-boot-* and vscode-boot-properties-*, vscide-boot-java-*

This would pontially cause weird version strings in concourse resources.

vscode-extensions/vscode-spring-boot/.vscode/settings.json

@@ -0,0 +1,12 @@
+// Place your settings in this file to overwrite default and user settings.
+{
+	"files.exclude": {
+		"out": true, // set this to true to hide the "out" folder with the compiled JS files
+		"node_modules": false,
+		"target": true
+	},
+	"search.exclude": {
+		"out": true // set this to false to include "out" folder in search results
+	},
+	"typescript.tsdk": "./node_modules/typescript/lib" // we want to use the TS server from our node_modules folder to control its version
+}