Reorganize documentation index

Moved examples and use cases into a common subdir so those topics will
get grouped together in the main sidebar/TOC

doc/examples/scripting/data_struct_table_declaration.bro

@@ -0,0 +1,19 @@
+event bro_init()
+    {
+    # Declaration of the table.
+    local ssl_services: table[string] of port;
+
+    # Initialize the table.
+    ssl_services = table(["SSH"] = 22/tcp, ["HTTPS"] = 443/tcp);
+
+    # Insert one key-yield pair into the table.
+    ssl_services["IMAPS"] = 993/tcp;
+
+    # Check if the key "SMTPS" is not in the table.
+    if ( "SMTPS" !in ssl_services )
+        ssl_services["SMTPS"] = 587/tcp;
+
+    # Iterate over each key in the table.
+    for ( k in ssl_services )
+        print fmt("Service Name:  %s - Common Port: %s", k, ssl_services[k]);
+    }