Configurable setting to suppress Exchange acceptance/decline notifications in TRIRIGA Reserve (Graph API sendResponse)

Hi Team,

Hope you're doing well. I'm opening this ticket to request a potential enhancement to the platform-level Java code, specifically the ability to suppress the Exchange acceptance/decline notification for room reservations. For background on the underlying Outlook notification behavior, please refer to ticket TS021278656.

##Issue:##
When TRIRIGA Reserve is integrated with Microsoft Exchange, creating a room reservation causes the meeting organizer to receive an Exchange accept/decline notification from the room resource mailbox (e.g., "Room X has accepted this meeting"). This response is triggered by TRIRIGA's platform Graph integration layer, which calls the Microsoft Graph `accept` / `decline` / `tentativelyAccept` action on the room's event.

The Microsoft Graph API exposes a `sendResponse` boolean on these actions (default `true`) that controls whether the organizer receives this response email. Currently, TRIRIGA does not appear to expose this parameter through any supported configuration surface — it is set within the platform code (observed in `com.tririga.platform.msgraph.MsGraphExchangeServiceImpl`, action "MSGraph Accept Appointment").

##Requested change:##
Expose the `sendResponse` value — or an equivalent "Suppress Exchange response notification" flag — as a supported configuration option. In order of preference:

1. Per-space, on the Reserve tab of the Space form (most granular — allows suppression for specific rooms only)
2. Globally, under Tools > System Setup > General > Application Settings > Reservation Settings
3. At minimum, a TRIRIGAWEB.properties or OAuth-profile-level setting

##Supporting evidence##— server-side trace confirming the call originates in the platform Graph layer and that a response is sent:

```
DEBUG [com.tririga.platform.msgraph.GraphBaseServiceImpl] Connecting to MsGraph with OAuth using profile getToken: [ORG] RESERVE - Back-end Server Communication
DEBUG [com.tririga.platform.msgraph.MsGraphExchangeServiceImpl] Query List Event ... "responseRequested":true ... "meetingRequestType":"newMeetingRequest"
DEBUG [com.tririga.platform.msgraph.MsGraphExchangeServiceImpl] MSGraph Accept Appointment
```

For reference, Microsoft's Graph API documentation confirms that the `accept`/`decline`/`tentativelyAccept` event actions accept an optional `sendResponse` boolean (default `true`) that controls whether a response is sent to the organizer.

Thank you,
Shrimant Wagh