[Nim] Simple operator for `Uri` to help append queries

appendQuery.nim

import std/uri

proc `?+`*(url: Uri, ql: openArray[tuple[string, string]]): Uri =
  var qs = @ql
  
  if url.query.len() != 0:
    for k, v in url.query.decodeQuery():
      qs.add( (k, v) )

  return url ? qs

proc `?+=`*(url: var Uri, ql: openArray[tuple[string, string]]) {.inline.} = url = url ?+ ql

var url = parseUri("https://example.org?x=y")

echo url
url ?+= { "a": "b" }
echo url
echo url ?+ { "e": "h" }
echo url