chore: add changesets

Signed-off-by: braks <78412429+bcakmakoglu@users.noreply.github.com>

.changeset/cold-apes-protect.md

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+---
+'@vue-flow/core': minor
+---
+
+Add `connectionRadius` option to global options and handle props.
+You can use this option to set the radius at which a connection line will snap to the closest available handle.

.changeset/cuddly-fans-think.md

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+---
+'@vue-flow/core': minor
+---
+
+Remove `isValidSourcePos` and `isValidTargetPos` options from nodes.
+Use custom node components and pass the validator function to the handle yourself.
+
+This option was deprecated and has now been removed.