fix AUR PKGBUILD: add pkg-config, prepare(), fix deps

dist/.SRCINFO

@@ -3,19 +3,23 @@ pkgbase = wherry
 	pkgver = 0.1.0
 	pkgrel = 1
 	url = https://github.com/loki5512344/Wherry
-	install =
 	arch = x86_64
 	license = GPL3
 	makedepends = cargo
-	makedepends = rust
+	makedepends = pkg-config
 	makedepends = patchelf
-	depends = webkit2gtk-4.1
+	depends = gcc-libs
 	depends = gtk3
+	depends = webkit2gtk-4.1
 	depends = libsoup3
+	depends = cairo
+	depends = gdk-pixbuf2
+	depends = glib2
 	depends = librsvg
+	depends = openssl
+	depends = libssh2
 	depends = libappindicator-gtk3
 	depends = dbus
-	depends = openssl
 	source = https://github.com/loki5512344/Wherry/archive/refs/tags/v0.1.0.tar.gz
 	sha256sums = SKIP