updated extension metadata and updated icon png to higher resolution

package.json

 {
 	"name": "modestextension",
-	"displayName": "ModestExtension",
-	"description": "Adding language support for the Modest Toolset",
+	"displayName": "Modest",
+	"description": "Language support for the Modest Toolset",
+	"icon": "media/modest-icon.png",
 	"version": "0.0.1",
-	"publisher": "ModestExtension developers",
+	"publisher": "ModestExtension-developers",
 	"license": "SEE LICENSE IN LICENSE",
 	"engines": {
 		"vscode": "^1.52.0"
@@ -21,6 +22,7 @@
 		"jani",
 		"automata"
 	],
+	"preview": true,
 	"qna": false,
 	"contributes": {
 		"commands": [
@@ -36,8 +38,8 @@
 				"command": "analysisResults.copyValue",
 				"title": "Copy value",
 				"icon": {
-				  "light": "media/light/copy.svg",
-				  "dark": "media/dark/copy.svg"
+					"light": "media/light/copy.svg",
+					"dark": "media/dark/copy.svg"
 				}
 			},
 			{
@@ -53,7 +55,7 @@
 				"title": "Export to JSON file"
 			}
 		],
-		"menus":{
+		"menus": {
 			"view/title": [
 				{
 					"command": "analysisResults.load",
@@ -66,9 +68,9 @@
 			],
 			"view/item/context": [
 				{
-				  "command": "analysisResults.copyValue",
-				  "when": "view == analysisResults",
-				  "group": "inline"
+					"command": "analysisResults.copyValue",
+					"when": "view == analysisResults",
+					"group": "inline"
 				},
 				{
 					"command": "analysisResults.copyValue",
@@ -207,4 +209,4 @@
 		"vscode-codicons": "0.0.15",
 		"vscode-languageclient": "^7.0.0"
 	}
-}
+}
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