refactor: move arch specific code to rpo folder, don't run SVE on CI

arch/arm64-sve/CMakeLists.txt

@@ -1,10 +0,0 @@
-cmake_minimum_required(VERSION 3.0)
-project(rpo_sve C)
-
-set(CMAKE_C_STANDARD 23)
-set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -march=armv8-a+sve -Wall -Wextra -pedantic -g -O3")
-
-add_library(rpo_sve library.c rpo_hash.h)
-
-add_executable(rpo_test test.c)
-target_link_libraries(rpo_test rpo_sve)

arch/arm64-sve/test.c

@@ -1,27 +0,0 @@
-#include <stdio.h>
-#include "library.h"
-
-void print_array(size_t len, uint64_t arr[len]);
-
-int main() {
-    uint64_t C[STATE_WIDTH] = {1, 1, 1, 1 ,1, 1, 1, 1 ,1, 1, 1, 1};
-    uint64_t T[STATE_WIDTH] = {1, 2, 3, 4, 1, 2, 3, 4,1, 2, 3, 4};
-
-    add_constants_and_apply_sbox(T, C);
-    add_constants_and_apply_inv_sbox(T, C);
-
-    print_array(STATE_WIDTH, T);
-
-    return 0;
-}
-
-void print_array(size_t len, uint64_t arr[len])
-{
-    printf("[");
-    for (size_t i = 0; i < len; i++)
-    {
-        printf("%lu ", arr[i]);
-    }
-
-    printf("]\n");
-}