add some entry ; add a script to get tool README

getreadme.sh

@@ -0,0 +1,16 @@
+#!/bin/bash -eu
+
+cli=$1
+page=${2-README.md}
+
+# lookup cli in catalog
+printf -v filter '.%s|.github' ${cli}
+gh=$(yq ${filter} catalog.yaml)
+
+# build gh README URL
+printf -v url1 'https://github.com/%s/raw/main/%s' ${gh} ${page}
+printf -v url2 'https://github.com/%s/raw/master/%s' ${gh} ${page}
+
+# curl and pipe to bat
+CURL="curl -fsS -L"
+{ ${CURL} "${url1}" || ${CURL} "${url2}" ; } | glow -p -