Use upstream unicorn for Ryujinx.Tests.Unicorn (#3771)

* unicorn: Add modified ver of unicorns const gen

* unicorn: Use upstream consts

These consts were generated from the dev branch of unicorn

* unicorn: Split common consts into multiple enums

* unicorn: Remove arch prefix from consts

* unicorn: Add new windows dll

Windows 10 - MSVC x64 shared build

* unicorn: Use absolute path for const generation

* unicorn: Remove fspcr patch

* unicorn: Fix using the wrong file extension

For some reason _NativeLibraryExtension evaluates to ".so" even on Windows.

* unicorn: Add linux shared object again

* unicron: Add DllImportResolver

* unicorn: Try to import unicorn using an absolute path

* unicorn: Add clean target

* unicorn: Replace IsUnicornAvailable() methods

* unicorn: Skip tests instead of silently passing them if unicorn is missing

* unicorn: Write error message to stderr

* unicorn: Make Interface static

* unicron: Include prefixed unicorn libs (libunicorn.so)

Co-authored-by: merry <git@mary.rs>

* unicorn: Add lib prefix to shared object for linux

Co-authored-by: merry <git@mary.rs>

Ryujinx.Tests.Unicorn/libs/README.md

@@ -9,14 +9,12 @@ CPU simulator, Armeilleure.
 
 On Windows, Unicorn is shipped as a pre-compiled dynamic library (`.dll`), licenced under the GPLv2.
 
-The source code for `windows/unicorn.dll` is available at: https://github.com/MerryMage/UnicornDotNet/tree/299451c02d9c810d2feca51f5e9cb6d8b2f38960
+The source code for `windows/unicorn.dll` is available at: https://github.com/unicorn-engine/unicorn/tree/df3aa0fccbce9e1420e82110cbae5951755a0698
 
 ## Linux
 
-On Linux, you will first need to download Unicorn from https://github.com/unicorn-engine/unicorn.
+On Windows, Unicorn is shipped as a pre-compiled shared object (`.so`), licenced under the GPLv2.
 
-Then you need to patch it to expose the FSPCR register by applying `linux/unicorn_fspcr.patch` 
-
-Then, compile Unicorn from source with its `make.sh` script.
+The source code for `linux/unicorn.so` is available at: https://github.com/unicorn-engine/unicorn/tree/df3aa0fccbce9e1420e82110cbae5951755a0698
 
 See https://github.com/Ryujinx/Ryujinx/pull/1433 for details.

Ryujinx.Tests.Unicorn/libs/linux/unicorn_fspcr.patch

@@ -1,24 +0,0 @@
-diff --git a/qemu/target-arm/unicorn_arm.c b/qemu/target-arm/unicorn_arm.c
-index 5ff9ebb..d4953f4 100644
---- a/qemu/target-arm/unicorn_arm.c
-+++ b/qemu/target-arm/unicorn_arm.c
-@@ -101,6 +101,9 @@ int arm_reg_read(struct uc_struct *uc, unsigned int *regs, void **vals, int coun
-                 case UC_ARM_REG_FPEXC:
-                     *(int32_t *)value = ARM_CPU(uc, mycpu)->env.vfp.xregs[ARM_VFP_FPEXC];
-                     break;
-+                case UC_ARM_REG_FPSCR:
-+                    *(int32_t *)value = vfp_get_fpscr(&ARM_CPU(uc, mycpu)->env);
-+                    break;
-                 case UC_ARM_REG_IPSR:
-                     *(uint32_t *)value = xpsr_read(&ARM_CPU(uc, mycpu)->env) & 0x1ff;
-                     break;
-@@ -175,6 +178,9 @@ int arm_reg_write(struct uc_struct *uc, unsigned int *regs, void* const* vals, i
-                 case UC_ARM_REG_FPEXC:
-                     ARM_CPU(uc, mycpu)->env.vfp.xregs[ARM_VFP_FPEXC] = *(int32_t *)value;
-                     break;
-+                case UC_ARM_REG_FPSCR:
-+                    vfp_set_fpscr(&ARM_CPU(uc, mycpu)->env, *(uint32_t *)value);
-+                    break;
-                 case UC_ARM_REG_IPSR:
-                     xpsr_write(&ARM_CPU(uc, mycpu)->env, *(uint32_t *)value, 0x1ff);
-                     break;