nixos/middleman: Let's Encrypt for main domain

secrets/cloudflare-credentials.conf.age

@@ -0,0 +1,10 @@
+age-encryption.org/v1
+-> ssh-ed25519 H162lQ a/oJHGIB43DHpX/EUdal2ZyOlf+zYUbNwztGSP1iuGE
+W8bd1I0rgDMEc18zjpP0d4dyp4PGd19/8vJFlVOsGSs
+-> X25519 cjqYOE0e9IHvWvcGyOPDNTcNR6Ynv8TdRCoHiBx4UzI
+/EzNz/SSzvs9DbCGr28B4/jwZMnpUxoBtDOt9Ombv4Y
+-> x]-grease
+fRt2HHsTmZbotWaLfgPZ4PT76A
+--- M2/lLzEUiSmSuoPhtO/QAg+CPPvnBBMQhisX66A/aKE
+<EFBFBD>bD<EFBFBD><EFBFBD>l<EFBFBD><0E><><EFBFBD><EFBFBD>	<09><><EFBFBD>Γ<EFBFBD><CE93>
+<EFBFBD>G<EFBFBD><EFBFBD>g<EFBFBD>-<2D>2<EFBFBD><07><>Jb<4A><62><EFBFBD>t<EFBFBD>I<7F>:B<><42>1<>?<3F>V<>ۗ<EFBFBD>z<03><1F><>}<7D>3<EFBFBD>q<EFBFBD>I<EFBFBD><49><EFBFBD><EFBFBD><EFBFBD>><3E>