DSPTool: extract tests into a DSPAssemblyTest

- Moves all test code from DSPTool into UnitTests/Core/DSPAssemblyTest.
- Converts test files (which could only be loaded if they were in the
  shell's working directory, so basically never) into C++ values.
- Enables most of the commented-out tests.
- Removes non-deterministic random code test.

Source/UnitTests/Core/CMakeLists.txt

@@ -2,4 +2,11 @@ add_dolphin_test(MMIOTest MMIOTest.cpp)
 add_dolphin_test(PageFaultTest PageFaultTest.cpp)
 add_dolphin_test(CoreTimingTest CoreTimingTest.cpp)
 
+add_dolphin_test(DSPAssemblyTest
+  DSP/DSPAssemblyTest.cpp
+  DSP/DSPTestBinary.cpp
+  DSP/DSPTestText.cpp
+  DSP/HermesBinary.cpp
+) 
+
 add_dolphin_test(ESFormatsTest IOS/ES/FormatsTest.cpp IOS/ES/TestBinaryData.cpp)