Closes jp9000/obs-studio#860

Closes jp9000/obs-studio#804

Closes jp9000/obs-studio#804

So many checkboxes were together almost senselessly.

This is mainly to give visual feedback to those affected by NVENC not
working with older driver versions. Currenlty obs fails silently which
could go unnoticed for users who are using hotkeys as well as confuse
users who are not trained to read their logs when issues occur.

Closes jp9000/obs-studio#788

Adds audio monitoring selection to advanced audio properties, and adds
the ability to select the device in advanced settings.

Makes it a bit more clear that this always minimizes to system tray.

Closes jp9000/obs-studio#748

This adds an option to the general settings to save the opened
projectors on exit.

(Note: Fixed conflicts -Jim)

Closes jp9000/obs-studio#743

Closes jp9000/obs-studio#737

Closes jp9000/obs-studio#721

This commit adds the ability to copy a scene item's transform and crop
settings and paste those settings onto another scene item in any scene
or scene collection. It also changes the menu shortcut key for the
Transform action "Center to screen" from "C" to "n" because "C" is the
standard shortcut key for "Copy" in most other applications.

Closes jp9000/obs-studio#719

Replay buffer and recording should be separate in case the user wants to
start recording from a specific point rather being forced to reconfigure
for regular recording.

Creates a new button on the main window below the recording button for
turning on/off the replay buffer.

It should specify that the user specifically needs to set the "save"
hotkey, not just "the replay buffer hotkey".

Adds preview scaling to the right-click context menu for the preview
pane.  This allows the ability to, for example, zoom the preview and
edit the preview 1:1 (canvas/base resolution).  This was a missing
parity feature.  Additionally, also allows scaling to the
"output/scaled" resolution the program is set to.

When the preview is in scale mode and is the focused widget, you can
hold space and drag with left click to change the zoomed position.

(Notes added by Jim)

Closes jp9000/obs-studio#687

This adds streaming and recording timers to the frontend tools.

Closes jp9000/obs-studio#625

Closes jp9000/obs-studio#630

Adds a reset and close button to the transform dialog.

Closes jp9000/obs-studio#612

Allows manipulating and modifying the front-end via plugins.

This is to prevent confusion both when prefixing commits and when
reading the directory structure for the first time.

Closes jp9000/obs-studio#563

This adds a system tray when enabled. There is also a option to minimize
to the system tray when the app is started.

Closes jp9000/obs-studio#595

Adds the ability to lock the preview so sources can't be edited.  This
feature is typically used in the case where the user wants to prevent
accidentally clicking and dragging on sources.

Adds a little improvement to quality-of-life, a typical "View" menu with
the ability to show/hide the following (for now):

- Listbox toolbars
- Status bar
- Transitions pane (some people don't really need/use/care about it)

Adds scale filtering options to the scene item right-click context menu.

Allows the ability for users to make it so recording automatically
starts when they start streaming.  Also adds the option to allow the
recording to continue when stream is stopped.

Closes jp9000/obs-studio#554