Remove sqlite-viewer and using database client (go-gitea#31223)

sqlite-viewer can not edit sqlite.
database client can connect to almost all common databases, which is
very useful I think. Of cause, it can edit sqlite.

https://marketplace.visualstudio.com/items?itemName=cweijan.vscode-database-client2

And for using sqlite, sqlite3 is required. So also added a new feature:
https://github.com/warrenbuckley/codespace-features
found from: https://containers.dev/features

Author: yp05327

.devcontainer/devcontainer.json

@@ -10,7 +10,8 @@
     "ghcr.io/devcontainers-contrib/features/poetry:2": {},
     "ghcr.io/devcontainers/features/python:1": {
       "version": "3.12"
-    }
+    },
+    "ghcr.io/warrenbuckley/codespace-features/sqlite:1": {}
   },
   "customizations": {
     "vscode": {
@@ -25,7 +26,7 @@
         "Vue.volar",
         "ms-azuretools.vscode-docker",
         "vitest.explorer",
-        "qwtel.sqlite-viewer",
+        "cweijan.vscode-database-client2",
         "GitHub.vscode-pull-request-github",
         "Azurite.azurite"
       ]

.gitpod.yml

@@ -43,7 +43,7 @@ vscode:
     - Vue.volar
     - ms-azuretools.vscode-docker
     - vitest.explorer
-    - qwtel.sqlite-viewer
+    - cweijan.vscode-database-client2
     - GitHub.vscode-pull-request-github
 
 ports: