doc/manpages: Add manpages to readthedocs

doc/index.rst

@@ -22,3 +22,44 @@ c-lightning Documentation
    Coding Style Guideline <STYLE.md>
    MAKING-RELEASES.md
    CHANGELOG.md
+
+.. toctree::
+   :maxdepth: 1
+   :caption: Manpages
+
+   lightning-autocleaninvoice.7.md
+   lightning-check.7.md
+   lightning-cli.1.md
+   lightning-close.7.md
+   lightning-connect.7.md
+   lightningd.8.md
+   lightningd-config.5.md
+   lightning-decodepay.7.md
+   lightning-delexpiredinvoice.7.md
+   lightning-delinvoice.7.md
+   lightning-disconnect.7.md
+   lightning-fundchannel.7.md
+   lightning-fundchannel_cancel.7.md
+   lightning-fundchannel_complete.7.md
+   lightning-fundchannel_start.7.md
+   lightning-getroute.7.md
+   lightning-invoice.7.md
+   lightning-listchannels.7.md
+   lightning-listforwards.7.md
+   lightning-listfunds.7.md
+   lightning-listinvoices.7.md
+   lightning-listpays.7.md
+   lightning-listpeers.7.md
+   lightning-listsendpays.7.md
+   lightning-newaddr.7.md
+   lightning-pay.7.md
+   lightning-plugin.7.md
+   lightning-sendpay.7.md
+   lightning-setchannelfee.7.md
+   lightning-txdiscard.7.md
+   lightning-txprepare.7.md
+   lightning-txsend.7.md
+   lightning-waitanyinvoice.7.md
+   lightning-waitinvoice.7.md
+   lightning-waitsendpay.7.md
+   lightning-withdraw.7.md