fix(lint): resolve E205 and E215 in hostname, json-logs, jsonwt, ltp, matter, hap

Replace Printf/Format with Fmt. Use Fmt.failwith instead of failwith(Fmt.str).

fuzz/dune

···
  (alias fuzz)
  (deps fuzz_hap.exe)
  (action
-  (echo "AFL fuzzer built: %{exe:fuzz_hap.exe}\n")))
+  (run %{exe:fuzz_hap.exe})))

lib/hap.ml

···
   let get_exn typ tlv =
     match get typ tlv with
     | Some v -> v
-    | None -> failwith (Fmt.str "TLV type %d not found" typ)
+    | None -> Fmt.failwith "TLV type %d not found" typ
 
   (* Encode TLV to bytes - values > 255 bytes are split *)
   let encode tlv =