botan3: init at 3.1.1

Use the existing generic botan file and add specialization
for botan 3. Botan 3 most importantly adds support for
TLS 1.3 and PQC algorithms. Introduce Botan 3 in parallel to
Botan 2, as it is a major release and e.g. now uses C++20
in contrast to C++11 of Botan 2.9.

Signed-off-by: Markus Theil <[e-mail]>

pkgs/development/libraries/botan/3.0.nix

···
+{ callPackage, fetchpatch, ... } @ args:
+
+callPackage ./generic.nix (args // {
+  baseVersion = "3.1";
+  revision = "1";
+  sha256 = "sha256-MMhP6RmTapj+9TMfJGxiqiwOTSCFstRREgf2ogr6Oms=";
+})

pkgs/top-level/all-packages.nix

···
     inherit (darwin.apple_sdk.frameworks) CoreServices Security;
   };
 
+  botan3 = callPackage ../development/libraries/botan/3.0.nix {
+    inherit (darwin.apple_sdk.frameworks) CoreServices Security;
+  };
+
   box2d = callPackage ../development/libraries/box2d { };
 
   boxfort = callPackage ../development/libraries/boxfort { };