[Stable] Ver 2.3.0e Addition of the game apis

[h2]Studio/Room[/h2]
[h3]Changes[/h3]

Changed the message shown on the in-VR title screen.
Added a description on the two-factor authentication screen for niconico account integration.

[h2]Room[/h2]
[h3]New Features[/h3]

Added a feature to itemize or submit a photo taken in VirtualCast in the past from within VR.
- A new menu, "History," is added in [Ring menu] > [Camera] > [Media], where you can choose a photo taken in the past and turn it into an item or submit it on Twitter.

[h3]Improvements[/h3]

[h3]Fixes[/h3]

Fixed the issue where an error is displayed when you agreed on character licenses from Purchase History or Upload History.
Fixed the issue where pointing the hand-laser to a VCI containing many SubItems caused the app to drop frames.
Changed the description in the calibration scene to reflect the current specification.
Fixed the issue where the help ticker is shown in the wrong place when you hover your hand over the slider UI.
Fixed the issue where you couldn't touch the SpringBone of the other player's avatars.

[h2]VCI[/h2]
[h3]New Features[/h3]

Added a feature to display the rendering frame rate and Lua thread frame rate on the upper right corner of the HMD screen. You can enable this in a room by enabling [System] > [For Developper] > [VCI Debug].
Added useful APIs for making games easier. For details, see this article(Japanese).
You can now get the transform information of the monitor camera in rooms.

[h3]Improvements[/h3]

Improved the performance of VCI.
Adjusted the behavior of SubItems, which have their rotation constrained within the VCI, when they are grabbed and moved.

[h3]Bug fixes[/h3]

Fixed the issue where you couldn't change the sound volume of a video playing VCI (seen in Mikuland) from its context menu.

[h2]VRM[/h2]
[h3]New Features[/h3]