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>

yarn.lock

@@ -63,10 +63,10 @@
     "@atproto/xrpc" "^0.7.1"
     "@atproto/xrpc-server" "^0.9.1"
 
-"@atproto/api@^0.15.26":
-  version "0.15.26"
-  resolved "https://registry.yarnpkg.com/@atproto/api/-/api-0.15.26.tgz#452019d6d0753d4caa0f7941e8e87e9f8bfbee52"
-  integrity sha512-AdXGjeCpLZiP9YMGi4YOdK1ayqkBhklmGfSG8UefqR6tTHth59PZvYs5KiwLnFhedt2Xljt3eUlhkn14Y48wEA==
+"@atproto/api@^0.16.2":
+  version "0.16.2"
+  resolved "https://registry.yarnpkg.com/@atproto/api/-/api-0.16.2.tgz#1b2870e9a03d88f00a27602281755fa82ec824dd"
+  integrity sha512-sSTg31J8ws8DNaoiizp+/uJideRxRaJsq+Nyl8rnSxGw0w3oCvoeRU19iRWh2t0jZEmiRJAGkveGu23NKmPYEQ==
   dependencies:
     "@atproto/common-web" "^0.4.2"
     "@atproto/lexicon" "^0.4.12"