Fixed a bug in the build file, fixed functions signature for aes and ed25519, made visibility changes in packet and made the enums needed for destination

build.zig

@@ -23,7 +23,7 @@ pub fn build(b: *std.Build) void {
         // Configuration
         .target = b.standardTargetOptions(.{}),
         .optimize = b.standardOptimizeOption(.{}),
-        .linkage = if (opt_shared) .static else .dynamic,
+        .linkage = if (opt_shared) .dynamic else .static,
         .test_step = opt_test
     };