Add Clone function to return shallow copy of slice collections (#732)

* Initial plan

* Add Clone function to return shallow copy of slice collection

Co-authored-by: quexer <92157+quexer@users.noreply.github.com>

* Update slice.go

Co-authored-by: Samuel Berthe <dev@samuel-berthe.fr>

* Update slice_test.go

Co-authored-by: Samuel Berthe <dev@samuel-berthe.fr>

* doc and test

* Apply suggestions from code review

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: quexer <92157+quexer@users.noreply.github.com>
Co-authored-by: Samuel Berthe <dev@samuel-berthe.fr>

docs/data/core-clone.md

@@ -0,0 +1,26 @@
+---
+name: Clone
+slug: clone
+sourceRef: slice.go#L741
+category: core
+subCategory: slice
+playUrl:
+variantHelpers:
+  - core#slice#clone
+similarHelpers:
+  - core#slice#repeat
+  - core#slice#fill
+position: 160
+signatures:
+  - "func Clone[T any, Slice ~[]T](collection Slice) Slice"
+---
+
+Returns a shallow copy of the collection.
+
+```go
+in := []int{1, 2, 3, 4, 5}
+cloned := lo.Clone(in)
+// Verify it's a different slice by checking that modifying one doesn't affect the other
+in[0] = 99
+// cloned is []int{1, 2, 3, 4, 5}
+```