tlmgr-generate: add page (#8918)

pages/common/tldr-generate.md

@@ -0,0 +1,16 @@
+# tlmgr generate
+
+> Remake configuration files from information stored locally.
+> More information: <https://www.tug.org/texlive/tlmgr.html>.
+
+- Remake the configuration file storing into a specific location:
+
+`tlmgr generate --dest {{output_file}}`
+
+- Remake the configuration file using a local configuration file:
+
+`tlmgr generate --localcfg {{local_configuration_file}}`
+
+- Run necessary programs after rebuilding configuration files:
+
+`tlmgr generate --rebuild-sys`