chore(vscode): add logo image and publish info

Author: ytaek

packages/vscode/images/githru_logo_temp.png

@@ -2,16 +2,30 @@
     "name": "githru-vscode-ext",
     "displayName": "githru-vscode-ext",
     "description": "vscode extension module for githru-vscode-ext",
-    "repository": "https://github.com/githru/githru-vscode-ext",
+    "publisher": "githru",
+    "repository": {
+        "url": "https://github.com/githru/githru-vscode-ext",
+        "type": "git"
+    },
     "version": "0.1.0",
     "engines": {
         "vscode": "^1.67.0"
     },
+    "icon": "images/githru_logo_temp.png",
     "author": {
         "name": "team githru"
     },
     "categories": [
-        "Other"
+        "Other",
+        "SCM Providers"
+    ],
+    "keywords": [
+        "githru",
+        "git",
+        "GitHub",
+        "log",
+        "visualization",
+        "visual analytics"
     ],
     "activationEvents": [
         "*"