Add missing OPTIONAL_API and ARI dependences.

I've audited all modules that include any header which includes
asterisk/optional_api.h.  All modules which use OPTIONAL_API now declare
those dependencies in AST_MODULE_INFO using requires or optional_modules
as appropriate.

In addition ARI dependency declarations have been reworked.  Instead of
declaring additional required modules in res/ari/resource_*.c we now add
them to an optional array "requiresModules" in api-docs for each module.
This allows the AST_MODULE_INFO dependencies to include those missing
modules.

Change-Id: Ia0c70571f5566784f63605e78e1ceccb4f79c606

rest-api/api-docs/bridges.json

@@ -6,6 +6,10 @@
 	"swaggerVersion": "1.1",
 	"basePath": "http://localhost:8088/ari",
 	"resourcePath": "/api-docs/bridges.{format}",
+	"requiresModules": [
+		"res_stasis_recording",
+		"res_stasis_playback"
+	],
 	"apis": [
 		{
 			"path": "/bridges",