.github: Add eclasses to automation

.github/workflows/portage-stable-packages-list

@@ -260,6 +260,7 @@ eclass/llvm.eclass
 eclass/ltprune.eclass
 eclass/meson-multilib.eclass
 eclass/meson.eclass
+eclass/mount-boot.eclass
 eclass/multibuild.eclass
 eclass/multilib-build.eclass
 eclass/multilib-minimal.eclass
@@ -285,6 +286,7 @@ eclass/savedconfig.eclass
 eclass/strip-linguas.eclass
 eclass/systemd.eclass
 eclass/tmpfiles.eclass
+eclass/toolchain-autoconf.eclass
 eclass/toolchain-funcs.eclass
 eclass/toolchain.eclass
 eclass/udev.eclass
@@ -294,6 +296,7 @@ eclass/user-info.eclass
 # eclass/usr-ldscript.eclass
 eclass/vcs-clean.eclass
 eclass/verify-sig.eclass
+eclass/versionator.eclass
 eclass/vim-doc.eclass
 eclass/vim-plugin.eclass
 eclass/virtualx.eclass