[Build] Convert build system to raw cmake and remove premake layer

src/xenia/cpu/testing/CMakeLists.txt

@@ -0,0 +1,7 @@
+xe_test_suite(xenia-cpu-tests ${CMAKE_CURRENT_SOURCE_DIR}
+  LINKS
+    capstone fmt imgui
+    xenia-base xenia-core xenia-cpu xenia-gpu
+    xenia-hid-skylander xenia-kernel xenia-ui xenia-patcher
+    $<$<STREQUAL:${CMAKE_SYSTEM_PROCESSOR},x86_64>:xenia-cpu-backend-x64>
+)

src/xenia/cpu/testing/premake5.lua

@@ -1,28 +0,0 @@
-project_root = "../../../.."
-include(project_root.."/tools/build")
-
-test_suite("xenia-cpu-tests", project_root, ".", {
-  links = {
-    "capstone",
-    "fmt",
-    "imgui",
-    "xenia-base",
-    "xenia-core",
-    "xenia-cpu",
-    "xenia-gpu",
-    "xenia-hid-skylander",
-
-    -- TODO(benvanik): cut these dependencies?
-    "xenia-kernel",
-    "xenia-ui", -- needed by xenia-base
-    "xenia-patcher",
-  },
-  filtered_links = {
-    {
-      filter = 'architecture:x86_64',
-      links = {
-        "xenia-cpu-backend-x64",
-      },
-    }
-  },
-})