WIP: SPV Remapper: add remapper test framework

Test/baseResults/remap.basic.everything.frag.out

@@ -0,0 +1,31 @@
+remap.basic.everything.frag
+Warning, version 450 is not yet complete; most version-specific features are present, but some are missing.
+
+
+Linked fragment stage:
+
+
+// Module Version 10000
+// Generated by (magic number): 80001
+// Id's are bound by 24969
+
+                              Capability Shader
+               1:             ExtInstImport  "GLSL.std.450"
+                              MemoryModel Logical GLSL450
+                              EntryPoint Fragment 5663  "main" 4539 3773
+                              ExecutionMode 5663 OriginUpperLeft
+               8:             TypeVoid
+            1282:             TypeFunction 8
+              13:             TypeFloat 32
+              29:             TypeVector 13(float) 4
+             666:             TypePointer Output 29(fvec4)
+            4539:    666(ptr) Variable Output
+             650:             TypePointer Input 13(float)
+            3773:    650(ptr) Variable Input
+            5663:           8 Function None 1282
+           24968:             Label
+           17486:   13(float) Load 3773
+           17691:   29(fvec4) CompositeConstruct 17486 17486 17486 17486
+                              Store 4539 17691
+                              Return
+                              FunctionEnd