Background:

• Clips (and other Items) have an enabled flag which toggles whether they are enabled or disabled. For audio clips, this is a mute/unmute toggle. For video clips, a hide/show toggle.

Problem:

• Currently Raven's display shows no indication whether a clip is enabled or disabled.

Feature Request:

• Raven should draw disabled Clips in a muted grey color so the enabled/disabled state is clear at a glance.
• In the Inspector tab, Raven should show an "Enabled" checkbox which can be toggled on/off to modify the currently selected Clip (or other Item).

Stretch goal:

• Tracks are also Items, and can be disabled. Raven should draw whole Tracks with a ghosted/grey style.

Estimated Difficulty:

• Easy
• Some familiarity with C/C++
• Only 2 source files need to be modified (timeline.cpp and inspector.cpp)
• Data structure is already in place.
• Test data is available.
• Only user interface needs to be changed.
• No difficult design or architecture choices.
• This task is a good introduction to Dear ImGui