initital MSG and NED implementation

.gitignore

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+# local and generated files not to be committed
+node_modules/*

.gitmodules

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+[submodule "subprojects/omnetpp-textmate-ned"]
+	path = subprojects/omnetpp-textmate-ned
+	url = https://github.com/omnetpp/omnetpp-textmate-ned
+[submodule "subprojects/omnetpp-textmate-msg"]
+	path = subprojects/omnetpp-textmate-msg
+	url = https://github.com/omnetpp/omnetpp-textmate-msg

README.md

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-TextMate grammar and Visual Studio Code extension for the OMNeT++ NED language.
+TextMate grammar and Visual Studio Code extension for the OMNeT++ NED and MSG languages.
 
 ## Features
 
-Syntax highlighting of .ned files.
+Syntax highlighting of .ned and .msg files.
 
 ## Requirements
 
 VS Code version 1.92 or higher.
+
+## Building locally
+
+Node.js is required for building the extension locally (see https://nodejs.org for install instructions). 
+
+- Clone this repo
+- Run `refresh_submodules` to fetch the grammar submodules
+- Install `vsce`: `npm install -g @vscode/vsce`
+
+To build the .vsix file, run:
+
+`npm run package`
+
+## Installing
+
+In VSCode/Extensions, select 'Install from VSIX...' from the ... menu

package.json

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+{
+  "name": "omnetpp-vscode",
+  "displayName": "omnetpp-vscode",
+  "description": "Extension for the OMNeT++ NED and MSG languages",
+  "version": "0.0.1",
+  "publisher": "opensim",
+  "repository": "https://github.com/adamgeorge309/omnetpp-vscode",
+  "icon": "logo128.png",
+  "engines": {
+    "vscode": "^1.92.0"
+  },
+  "categories": [
+    "Programming Languages"
+  ],
+  "scripts": {
+    "test": "echo \"Error: no test specified\"",
+    "package": "vsce package",
+    "deploy": "vsce publish --yarn"
+  },
+  "contributes": {
+    "languages": [
+      {
+        "id": "omnetpp-ned",
+        "extensions": [
+          ".ned"
+        ],
+        "configuration": "./language-configuration.json"
+      },
+      {
+        "id": "omnetpp-msg",
+        "extensions": [".msg"],
+        "configuration": "./language-configuration.json"
+      }
+    ],
+    "grammars": [
+      {
+        "language": "omnetpp-ned",
+        "scopeName": "source.ned",
+        "path": "./syntaxes/ned.tmLanguage.json"
+      },
+      {
+        "language": "omnetpp-msg",
+        "scopeName": "source.msg",
+        "path": "./syntaxes/omnetpp-msg.tmLanguage.json"
+      }
+    ]
+  },
+  "devDependencies": {
+    "@vscode/vsce": "^3.0.0"
+  }
+}

refresh_submodules

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+echo 'Refreshing submodules....'
+cd subprojects
+git submodule init && git submodule update

syntaxes/ned.tmLanguage.json

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+../subprojects/omnetpp-textmate-ned/syntaxes/ned.tmLanguage.json

syntaxes/omnetpp-msg.tmLanguage.json

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+../subprojects/omnetpp-textmate-msg/syntaxes/omnetpp-msg.tmLanguage.json

vsc-extension-quickstart.md

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+# Welcome to your VS Code Extension
+
+## What's in the folder
+
+* This folder contains all of the files necessary for your extension.
+* `package.json` - this is the manifest file in which you declare your language support and define the location of the grammar file that has been copied into your extension.
+* `syntaxes/ned.tmLanguage.json` - this is the Text mate grammar file that is used for tokenization.
+* `language-configuration.json` - this is the language configuration, defining the tokens that are used for comments and brackets.
+
+## Get up and running straight away
+
+* Make sure the language configuration settings in `language-configuration.json` are accurate.
+* Press `F5` to open a new window with your extension loaded.
+* Create a new file with a file name suffix matching your language.
+* Verify that syntax highlighting works and that the language configuration settings are working.
+
+## Make changes
+
+* You can relaunch the extension from the debug toolbar after making changes to the files listed above.
+* You can also reload (`Ctrl+R` or `Cmd+R` on Mac) the VS Code window with your extension to load your changes.
+
+## Add more language features
+
+* To add features such as IntelliSense, hovers and validators check out the VS Code extenders documentation at https://code.visualstudio.com/docs
+
+## Install your extension
+
+* To start using your extension with Visual Studio Code copy it into the `<user home>/.vscode/extensions` folder and restart Code.
+* To share your extension with the world, read on https://code.visualstudio.com/docs about publishing an extension.