Copy docs into Zeek repo directly

This is based on commit 2731def9159247e6da8a3191783c89683363689c from the
zeek-docs repo.

doc/frameworks/tls_decryption-1-suspend-processing.zeek

@@ -0,0 +1,13 @@
+@load protocols/ssl/decryption
+@load base/protocols/http
+
+event zeek_init()
+	{
+	suspend_processing();
+	}
+
+event Input::end_of_data(name: string, source: string)
+	{
+	if ( name == "tls-keylog-file" )
+		continue_processing();
+	}