Added support for caching of compiled binaries

-VkFFT now supports caching of generated binaries. This can potentially increase the speed of initializiation call, as no recompilation is performed in this case. Performed on user side, as of now - user has to manage load/store of the binary generated by VkFFT. OpenCL backend caching is unstable, as different vendors generate CL_PROGRAM_BINARIES differently (will be fixed later).
-Fixed (#53). Was related to the bug in missing update of offsets if buffers are provided at launch
-Added option to provide offsets at launch (#53).
-Revorked constants provided at launch time for future convenience
-Fixed multi-upload multidimensional R2C bug if second dimension used Bluestein algorithm
-Updated documentation

Vulkan_FFT.cpp

@@ -439,7 +439,7 @@ int main(int argc, char* argv[])
 		version_decomposed[0] = version / 10000;
 		version_decomposed[1] = (version - version_decomposed[0] * 10000) / 100;
 		version_decomposed[2] = (version - version_decomposed[0] * 10000 - version_decomposed[1] * 100);
-		printf("VkFFT v%d.%d.%d (19-11-2021). Author: Tolmachev Dmitrii\n", version_decomposed[0], version_decomposed[1], version_decomposed[2]);
+		printf("VkFFT v%d.%d.%d (02-12-2021). Author: Tolmachev Dmitrii\n", version_decomposed[0], version_decomposed[1], version_decomposed[2]);
 #if (VKFFT_BACKEND==0)
 		printf("Vulkan backend\n");
 #elif (VKFFT_BACKEND==1)