chore: Add python-pytorch to optdepends

Signed-off-by: txtsd <code@ihavea.quest>

.SRCINFO

@@ -1,7 +1,7 @@
 pkgbase = llama.cpp-vulkan
 	pkgdesc = Port of Facebook's LLaMA model in C/C++ (with Vulkan GPU optimizations)
 	pkgver = b4713
-	pkgrel = 1
+	pkgrel = 2
 	url = https://github.com/ggerganov/llama.cpp
 	arch = x86_64
 	arch = armv7h
@@ -22,6 +22,7 @@ pkgbase = llama.cpp-vulkan
 	depends = python-numpy
 	depends = python-sentencepiece
 	depends = vulkan-icd-loader
+	optdepends = python-pytorch
 	provides = llama.cpp
 	conflicts = llama.cpp
 	options = lto

PKGBUILD

@@ -3,7 +3,7 @@
 pkgname=llama.cpp-vulkan
 _pkgname=${pkgname%%-vulkan}
 pkgver=b4713
-pkgrel=1
+pkgrel=2
 pkgdesc="Port of Facebook's LLaMA model in C/C++ (with Vulkan GPU optimizations)"
 arch=(x86_64 armv7h aarch64)
 url='https://github.com/ggerganov/llama.cpp'
@@ -27,9 +27,10 @@ makedepends=(
   vulkan-headers
   pkgconf
 )
+optdepends=(python-pytorch)
 provides=(${_pkgname})
 conflicts=(${_pkgname})
-options=(lto)
+options+=(lto)
 source=(
   "git+${url}#tag=${pkgver}"
   "git+https://github.com/nomic-ai/kompute.git"