Move pages under tldr, lint run.sh, update docs

tldr/gnucash-cli

@@ -0,0 +1,17 @@
+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# gnucash-cli
+
+> A command-line version of GnuCash.
+> More information: <https://gnucash.org>.
+
+- Get quotes for currencies and stocks specified in a file and print them:
+
+`gnucash-cli --quotes get {{path/to/file.gnucash}}`
+
+- Generate a financial report of a specific type, specified by `--name`:
+
+`gnucash-cli --report run --name "{{Balance Sheet}}" {{path/to/file.gnucash}}`