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

tldr/makebuildserver

@@ -0,0 +1,17 @@
+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# makebuildserver
+
+> Create an F-Droid build server virtual machine.
+> More information: <https://f-droid.org/en/docs/Build_Server_Setup/>.
+
+- Create a new virtual machine or update an existing one (if available):
+
+`makebuildserver`
+
+- Force creating a fresh virtual machine:
+
+`makebuildserver --clean`