[APP-657] Add share list functionality (#863)

* replace delete list button text with icon

* fix mute list styling on desktop

* add share button to nav bar on a list

* fix styling when on profile

* bug: add key to ImageHorzList

* clean up code & refactor

* fix styling for ListItems

* create a reusable ListActions component for actions on a list

* remove dead styles

* add keys to ListActions

* add helpers to set list embed

* render list embeds

* fix list sharing on web

* make style prop optional in ListCard

* update `@atproto/api` to `0.3.13`

src/view/com/util/images/ImageHorzList.tsx

@@ -13,6 +13,7 @@ export function ImageHorzList({images, style}: Props) {
     <View style={[styles.flexRow, style]}>
       {images.map(({thumb, alt}) => (
         <Image
+          key={thumb}
           source={{uri: thumb}}
           style={styles.image}
           accessible={true}