move std/parsesql to nimble packages (#25156)

pending nim-lang/packages#3117

ref https://github.com/nim-lang/parsesql

Author: ringabout

changelog.md

@@ -23,6 +23,8 @@ errors.
 
 - With `-d:nimPreviewCStringComparisons`, comparsions (`<`, `>`, `<=`, `>=`) between cstrings switch from reference semantics to value semantics like `==` and `!=`.
 
+- `std/parsesql` has been moved to a nimble package, use `nimble` or `atlas` to install it.
+
 ## Standard library additions and changes
 
 [//]: # "Additions:"

lib/pure/parsesql.nim

@@ -12,6 +12,8 @@
 ##
 ## Unstable API.
 
+{.deprecated: "use `nimble install parsesql` and import `pkg/parsesql` instead".}
+
 import std/[strutils, lexbase]
 import std/private/decode_helpers