LibCrypto: Link with OpenSSL

Add OpenSSL with vcpkg and link with LibCrypto using CMake.

Also added a placeholder GN setup.

Libraries/LibCrypto/CMakeLists.txt

@@ -39,3 +39,6 @@ set(SOURCES
 
 serenity_lib(LibCrypto crypto)
 target_link_libraries(LibCrypto PRIVATE LibCore)
+
+find_package(OpenSSL REQUIRED)
+target_link_libraries(LibCrypto PUBLIC OpenSSL::Crypto)

Meta/gn/build/libs/openssl/BUILD.gn

@@ -0,0 +1,5 @@
+import("//Meta/gn/build/libs/third_party.gni")
+
+third_party_dependency("openssl") {
+  libs = [ "openssl" ]
+}

Meta/gn/secondary/Userland/Libraries/LibCrypto/BUILD.gn

@@ -4,6 +4,7 @@ shared_library("LibCrypto") {
   cflags_cc = [ "-Wvla" ]
   deps = [
     "//AK",
+    "//Meta/gn/build/libs/openssl",
     "//Userland/Libraries/LibCore",
   ]
   sources = [

vcpkg.json

@@ -80,6 +80,7 @@
       "name": "mman",
       "platform": "windows"
     },
+    "openssl",
     {
       "name": "pthread",
       "platform": "windows"