Mark deprecated vars as such using metadata

Problem: the following functions in the ClojureScript repo are deprecated. Some tools like clj-kondo use the deprecated string or boolean from metadata to emit warnings for deprecated var usage. However, the deprecated vars in CLJS are not marked as such with metadata, so they won't be reported by these tools.

• core/bit-shift-right-zero-fill https://github.com/clojure/clojurescript/blob/402d47eb12b8fe5614f244dcf1ed300140e9bf51/src/main/cljs/cljs/core.cljs#L2894

• cljs.core/replicate https://github.com/clojure/clojurescript/blob/402d47eb12b8fe5614f244dcf1ed300140e9bf51/src/main/cljs/cljs/core.cljs#L4998

• cljs.analyzer/forms-seq
  https://github.com/clojure/clojurescript/blob/402d47eb12b8fe5614f244dcf1ed300140e9bf51/src/main/clojure/cljs/analyzer.cljc#L4261

• cljs.build.api/add-dependencies https://github.com/clojure/clojurescript/blob/402d47eb12b8fe5614f244dcf1ed300140e9bf51/src/main/clojure/cljs/build/api.clj#L134

• cljs.closure/add-dependencies
  https://github.com/clojure/clojurescript/blob/402d47eb12b8fe5614f244dcf1ed300140e9bf51/src/main/clojure/cljs/closure.clj#L957

• clojure.reflect (entire NS) https://github.com/clojure/clojurescript/blob/402d47eb12b8fe5614f244dcf1ed300140e9bf51/src/main/cljs/clojure/reflect.cljs#L9

Proposal: add metadata {:deprecated "<version>"} to all these vars.