Improved duplication (#2480)

Improves duplication. It will now remember the offset and shapes of your
`alt + drag` duplication and use that if you use the duplicate action
immediately after this.


![duplicate](https://github.com/tldraw/tldraw/assets/2523721/6fbfd455-d179-4eae-8aba-399b0781f633)

Fixes https://github.com/tldraw/tldraw/issues/2264

### Change Type

- [ ] `patch` — Bug fix
- [x] `minor` — New feature
- [ ] `major` — Breaking change
- [ ] `dependencies` — Changes to package dependencies[^1]
- [ ] `documentation` — Changes to the documentation only[^2]
- [ ] `tests` — Changes to any test code only[^2]
- [ ] `internal` — Any other changes that don't affect the published
package[^2]
- [ ] I don't know

[^1]: publishes a `patch` release, for devDependencies use `internal`
[^2]: will not publish a new version

### Test Plan

1. Add a step-by-step description of how to test your PR here.
2.

- [ ] Unit Tests
- [ ] End to end tests

### Release Notes

- Add a brief release note for your PR here.

---------

Co-authored-by: Taha <98838967+Taha-Hassan-Git@users.noreply.github.com>
Co-authored-by: David Sheldrick <d.j.sheldrick@gmail.com>
Co-authored-by: Steve Ruiz <steveruizok@gmail.com>

packages/tlschema/api/api.json

@@ -6681,6 +6681,42 @@
                 "endIndex": 2
               }
             },
+            {
+              "kind": "PropertySignature",
+              "canonicalReference": "@tldraw/tlschema!TLInstance#duplicateProps:member",
+              "docComment": "",
+              "excerptTokens": [
+                {
+                  "kind": "Content",
+                  "text": "duplicateProps: "
+                },
+                {
+                  "kind": "Content",
+                  "text": "{\n        shapeIds: "
+                },
+                {
+                  "kind": "Reference",
+                  "text": "TLShapeId",
+                  "canonicalReference": "@tldraw/tlschema!TLShapeId:type"
+                },
+                {
+                  "kind": "Content",
+                  "text": "[];\n        offset: {\n            x: number;\n            y: number;\n        };\n    } | null"
+                },
+                {
+                  "kind": "Content",
+                  "text": ";"
+                }
+              ],
+              "isReadonly": false,
+              "isOptional": false,
+              "releaseTag": "Public",
+              "name": "duplicateProps",
+              "propertyTypeTokenRange": {
+                "startIndex": 1,
+                "endIndex": 4
+              }
+            },
             {
               "kind": "PropertySignature",
               "canonicalReference": "@tldraw/tlschema!TLInstance#exportBackground:member",