vscode devcontainer (#3474)

* Added devcontainer configuration files

* Added launch.json and improved devcontainer

* Added tasks.json

* fix: lint

* fix: lint

* Applied suggestions from codereview

* Added more system dependencies and preserve history

* devcontainer updates

- Add extra environment variables for InvenTree config
- Move venv into dev directory (cleaner structure)
- Ensure base package requirements get installed
- Handle write-permission error for compiling translations
- Install test data inside dev directory

* Auto create plugin dir and added gh cli

* Refactored postCreateCommand into own file

* Applied suggestions from codereview

Co-authored-by: Oliver Walters <oliver.henry.walters@gmail.com>

.vscode/tasks.json

@@ -0,0 +1,52 @@
+{
+  // See https://go.microsoft.com/fwlink/?LinkId=733558
+  // for the documentation about the tasks.json format
+  "version": "2.0.0",
+  "tasks": [
+    {
+      "label": "clean-settings",
+      "type": "shell",
+      "command": "inv clean-settings",
+    },
+    {
+      "label": "delete-data",
+      "type": "shell",
+      "command": "inv delete-data",
+    },
+    {
+      "label": "migrate",
+      "type": "shell",
+      "command": "inv migrate",
+    },
+    {
+      "label": "server",
+      "type": "shell",
+      "command": "inv server",
+    },
+    {
+      "label": "setup-dev",
+      "type": "shell",
+      "command": "inv setup-dev",
+    },
+    {
+      "label": "setup-test",
+      "type": "shell",
+      "command": "inv setup-test --path dev/inventree-demo-dataset",
+    },
+    {
+      "label": "superuser",
+      "type": "shell",
+      "command": "inv superuser",
+    },
+    {
+      "label": "test",
+      "type": "shell",
+      "command": "inv test",
+    },
+    {
+      "label": "update",
+      "type": "shell",
+      "command": "inv update",
+    },
+  ]
+}