Vscode devcontainers (#3080)

* add devcontainers for `server`

* run db migrations automatically in dev environment

* remove curl

* remove trailing comma; causes parsing with `jq`

* use existing .env

* add initializeCommand

* use better search string

* restructure common files

* chmod +x scripts

* remove problematic env config scripts

* add mention of var that is needed for devcontainer

* remove ref to deleted script

* Update .devcontainer/community_dev/devcontainer.json

Co-authored-by: Justin Baur <19896123+justindbaur@users.noreply.github.com>

* Update .devcontainer/internal_dev/devcontainer.json

Co-authored-by: Justin Baur <19896123+justindbaur@users.noreply.github.com>

* use dev image for `6.0.416` SDK

* revert to manual DB migrations

* reuse SQL connection string var

---------

Co-authored-by: Justin Baur <19896123+justindbaur@users.noreply.github.com>

.devcontainer/community_dev/devcontainer.json

@@ -0,0 +1,14 @@
+{
+  "name": "Bitwarden Community Dev",
+  "dockerComposeFile": "../../.devcontainer/bitwarden_common/docker-compose.yml",
+  "service": "bitwarden_server",
+  "workspaceFolder": "/workspace",
+  "customizations": {
+    "vscode": {
+      "settings": {},
+      "features": {},
+      "extensions": ["ms-dotnettools.csdevkit"]
+    }
+  },
+  "postCreateCommand": "bash .devcontainer/community_dev/postCreateCommand.sh"
+}