chore: update VHS-generated GIFs for all demo tapes (#149)

## Summary

Re-ran VHS over all tape files in `docs/vhs/` to regenerate up-to-date
demo GIFs.

## Changes

- Updated GIFs: `advanced-features`, `install`, `mappings-demo`,
`multiple-mappings`, `remote-content`, `schema-generation`,
`yaml-config`
- Added new GIF: `usage` (basic-usage tape)
- Updated `.vscode/settings.json` (generated by schema-generation tape)

---
_Generated with
[Warp](https://app.warp.dev/conversation/16180b86-dbdb-4bf5-a6b9-f1feaee70f5a)_

Author: httpdss

.vscode/settings.json

@@ -1,8 +1,5 @@
 {
-    "yaml.schemas": {
-        "file:///home/kenny/.vscode-server/extensions/atlassian.atlascode-4.0.6/resources/schemas/pipelines-schema.json": "bitbucket-pipelines.yml",
-        "file:///home/kenny/.vscode-server/extensions/httpdss.vscode-struct-0.1.0/schemas/struct-schema.json": [
-            "*.struct.yaml"
-        ]
-    }
+  "yaml.schemas": {
+    "./.vscode/struct-plugins.schema.json": "*.struct.yaml"
+  }
 }