Initial commit for the Development Container config

This commit adds a .devcontainer directory, with the Dockerfile in the
configuration told to use the Dockerfile in the parent directory.

Using Development Containers means the environment is reproducible on
developer machines,
and reduces the barrier to entry for development. It also allows GitHub
Codespaces to be used.

Signed-off-by: Dom Rodriguez <shymega@shymega.org.uk>

.devcontainer/devcontainer.json

@@ -0,0 +1,16 @@
+{
+	"name": "Open PineBuds Pro - VS Code Development Environment",
+	"build": {
+		"dockerfile": "../Dockerfile",
+		"context": ".."
+	},
+	"extensions": [
+		"ms-vscode.cmake-tools",
+		"ms-vscode.cpptools"
+	],
+	"runArgs": [
+		"--privileged"
+	],
+	"userEnvProbe": "loginInteractiveShell",
+	"remoteUser": "root"
+}

.gitignore

@@ -19,6 +19,7 @@
 !.gitattributes
 !.mailmap
 !.github
+!.devcontainer
 
 # Backup files
 *~