Add missing clojure.core macros to clojure-mode font-lock declaration: (#623)

The following macros are added:

"amap" "areduce" "assert" "bound-fn" "comment" "definline" "definterface"
"defmethod" "defmulti" "defn-" "defonce" "defprotocol" "defrecord" "defstruct"
"deftype" "delay" "extend-protocol" "extend-type" "fn" "future" "gen-class"
"gen-interface" "import" "io!"  "lazy-cat" "lazy-seq" "let" "locking" "loop"
"memfn" "proxy" "proxy-super" "pvalues" "refer-clojure" "reify" "some->"
"some->>" "sync" "time" "vswap!"  "while" "with-bindings" "with-in-str"
"with-loading-context" "with-out-str" "with-precision"

Removed duplicated non-special form font locks from special form def:

"let" "loop"

Removd duplicated font locks symbols from the clojure-mode-extra-font-locking package:

"amap" "areduce" "as->" "assert" "bound-fn" "comment" "delay" "extend-protocol"
"extend-type" "future" "gen-interface" "io!" "lazy-cat" "lazy-seq" "locking"
"memfn" "proxy" "proxy-super" "pvalues" "refer-clojure" "reify" "some->"
"some->>" "sync" "time" "while" "with-bindings" "with-in-str"
"with-loading-context" "with-out-str" "with-precision"

Author: boxxxie

CHANGELOG.md

@@ -4,6 +4,7 @@
 
 ### Changes
 
+* [#622](https://github.com/clojure-emacs/clojure-mode/issues/622): Add font locking for missing clojure.core macros
 * [#615](https://github.com/clojure-emacs/clojure-mode/issues/615): Support clojure-dart files.
 
 ## 5.14.0 (2022-03-07)