chore(doc): change from GitPod (now ONA) to GitHub Codespaces (#6706)

.devcontainer/devcontainer.json

@@ -3,8 +3,9 @@
 {
 	"name": "edgetx-dev",
 	"image": "ghcr.io/edgetx/edgetx-dev:latest",
-	"runArgs": [ "--ipc=host"],
+	"runArgs": [
-
+		"--ipc=host"
+	],
 	// Add the IDs of extensions you want installed when the container is created.
 	"customizations": {
 		"vscode": {
@@ -12,5 +13,7 @@
 				"ms-vscode.cpptools"
 			]
 		}
-	}
+	},
+	// Post-create command to set up the environment
+	"postCreateCommand": "git submodule update --init --recursive && mkdir -p build && echo 'EdgeTX development environment ready!'"
 }

.gitpod.yml

@@ -1,5 +0,0 @@
-image: ghcr.io/edgetx/gitpod-workspace:latest
-
-tasks:
-  - name: Prep build folder
-    init: mkdir build && cd build

README.md

@@ -2,7 +2,7 @@
 [![GitHub all releases](https://img.shields.io/github/downloads/EdgeTX/edgetx/total)](https://github.com/EdgeTX/edgetx/releases)
 [![GitHub license](https://img.shields.io/github/license/Edgetx/edgetx)](https://github.com/EdgeTX/edgetx/blob/main/LICENSE)
 [![Commit Tests](https://github.com/EdgeTX/edgetx/actions/workflows/build_fw.yml/badge.svg)](https://github.com/EdgeTX/edgetx/actions/workflows/build_fw.yml)
-[![Gitpod ready-to-code](https://img.shields.io/badge/Gitpod-ready--to--code-blue?logo=gitpod)](https://gitpod.io/#https://github.com/edgetx/edgetx/tree/main)
+[![GitHub CodesSpaces ready-to-code](https://img.shields.io/badge/GitHub%20CodesSpaces-ready--to--code-blue?logo=github)](https://codespaces.new/EdgeTX/edgetx)
 [![Conventional Commits](https://img.shields.io/badge/Conventional%20Commits-1.0.0-%23FE5196?logo=conventionalcommits&logoColor=white)](https://conventionalcommits.org)
 [![Discord](https://img.shields.io/discord/839849772864503828.svg?label=&logo=discord&logoColor=ffffff&color=7389D8&labelColor=6A7EC2)](https://discord.gg/wF9wUKnZ6H)
 [![Support us on OpenCollective](https://img.shields.io/opencollective/all/edgetx)](https://opencollective.com/edgetx)