[tools, cmake] refactor: update/hash check scripts, use tags for some more deps, proper CPMUtil separation (#2666)

Uses tags for a bunch of deps that can use them

Also adds a bunmch of scripts to tools/cpm, notably for checking hashes
and checking for updates.

TODO for the future:
- CI target to check hashes
- Weekly CI to check for updates

Need to get that other CI runner up

additional stuff

- Ports gentoo fixes
- makes solaris work (TODO: sdl2)
- way better docs
- properly separates CPMUtil as a standalone project

Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/2666
Reviewed-by: Lizzie <lizzie@eden-emu.dev>
Reviewed-by: MaranBr <maranbr@eden-emu.dev>

src/common/common_types.h

@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: 2012 Gekko Emulator
 // SPDX-FileContributor: ShizZy <shizzy247@gmail.com>
 // SPDX-License-Identifier: GPL-2.0-or-later
@@ -30,7 +33,6 @@
 
 #include <array>
 #include <cstdint>
-#include <memory>
 
 using u8 = std::uint8_t;   ///< 8-bit unsigned byte
 using u16 = std::uint16_t; ///< 16-bit unsigned short