subprojects: add remain

Version 0.2.12 or greater supported in:

  - AOSP
  - Fedora (https://src.fedoraproject.org/rpms/rust-remain)

Acked-by: Aaron Ruby <aruby@qnx.com>
Reviewed-by: @LingMan
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/35210>

subprojects/packagefiles/remain/meson.build

@@ -0,0 +1,25 @@
+# Copyright © 2024 Google
+# SPDX-License-Identifier: MIT
+
+project(
+  'remain',
+  'rust',
+  version : '0.2.12',
+  license : 'MIT OR Apache-2.0',
+)
+
+syn = subproject('syn').get_variable('lib')
+quote = subproject('quote').get_variable('lib')
+proc_macro2 = subproject('proc-macro2').get_variable('lib')
+
+rust = import('rust')
+lib = rust.proc_macro(
+  'remain',
+  'src/lib.rs',
+  override_options : ['rust_std=2021', 'build.rust_std=2021'],
+  link_with : [syn, quote, proc_macro2]
+)
+
+dep_remain = declare_dependency(
+  link_with : [lib, syn, quote, proc_macro2]
+)

subprojects/remain.wrap

@@ -0,0 +1,6 @@
+[wrap-file]
+directory = remain-0.2.12
+source_url = https://crates.io/api/v1/crates/remain/0.2.12/download
+source_filename = remain-0.2.12.tar.gz
+source_hash = 1ad5e011230cad274d0532460c5ab69828ea47ae75681b42a841663efffaf794
+patch_directory = remain