initial commit, added basic build system with conan/meson, dependency on fftw3

src/main.c

@@ -0,0 +1,13 @@
+#include <stdio.h>
+#include <fftw3.h>
+
+#define PROJECT_NAME "Elemmire"
+
+int main(int argc, char **argv) {
+    if(argc != 1) {
+        printf("%s takes no arguments.\n", argv[0]);
+        return 1;
+    }
+    printf("This is project %s.\n", PROJECT_NAME);
+    return 0;
+}