Check handle as you type (#8601)

* check handle as you type

* metrics

* add metric types

* fix overflow

* only check reserved handles for bsky.social, fix test

* change validation check name

* tweak input

* move ghosttext component to textfield

* tweak styles to try and match latest

* add suggestions

* improvements, metrics

* share logic between typeahead and next button

* Apply suggestions from code review

Co-authored-by: surfdude29 <149612116+surfdude29@users.noreply.github.com>

* update checks, disable button if unavailable

* convert to lowercase

* fix bug with checkHandleAvailability

* add gate

* move files around to make clearer

* fix bad import

* Fix flashing next button

* Enable for TF

---------

Co-authored-by: surfdude29 <149612116+surfdude29@users.noreply.github.com>
Co-authored-by: Hailey <me@haileyok.com>
Co-authored-by: Eric Bailey <git@esb.lol>

package.json

@@ -70,7 +70,7 @@
     "icons:optimize": "svgo -f ./assets/icons"
   },
   "dependencies": {
-    "@atproto/api": "^0.15.26",
+    "@atproto/api": "^0.16.2",
     "@bitdrift/react-native": "^0.6.8",
     "@braintree/sanitize-url": "^6.0.2",
     "@discord/bottom-sheet": "bluesky-social/react-native-bottom-sheet",