Refactor scheduling events in render thread

[kiryldz]

Summary of changes

MapView#queueEvent will be executed properly on Mapbox render thread. Previously scheduling such events e.g. when render was not created properly could lead to a crash / be skipped if running OpenGL ES commands there.

Additionally internal render scheduling logic was refactored / fixed:

• in case of any EGL setup issues rescheduling will happen in small delay and not immediately in order not to overload render thread message queue
• user events scheduled by MapView#queueEvent(runnable, needRender = true | false) will be executed on render thread even if it's not fully prepared. In this case such events will keep to get re-scheduled with small delay (50 ms) until render thread is either ready or killed.
• any user render events scheduled by MapView#queueEvent(runnable, needRender = true) will be executed after map draw calls but before swapping buffers
• non-render events (both scheduled by MapClient#scheduleTask and MapView#queueEvent(runnable, needRender = false)) now have a check to verify render thread is fully ready.
• extra render call will be always scheduled now when app is brought back to front.

User impact (optional)

Some data collected by gfxinfo by running benchmarks changing map camera.

Average values for easeTo benchmark (5 runs, infinite moving camera between 3 points for 45 seconds).

metric	main branch	current refactor	diff
jankyFrames	3.0	2.75	-8.3333%
numberSlowUiThread	2.5	2.0	-20.0%
numberFrameDeadlineMissed	2.5	2.25	-10.0%
jankyFramesPercent	0.21	0.193	-8.0952%
totalFramesRendered	1406.5	1422.5	+1.1376%

Average values for flyTo benchmark (5 runs, infinite moving camera between 3 points for 45 seconds).

metric	main branch	current refactor	diff
jankyFrames	3.25	3.25	0%
numberSlowUiThread	2.75	2.5	-9.0909%
numberFrameDeadlineMissed	2.75	2.75	0%
jankyFramesPercent	0.245	0.242	-1.2245%
totalFramesRendered	1332.5	1335.75	+0.2439%

All the metrics look slightly better with refactor introduced in this PR although it's hard to gather very stable ones. Main idea is that code looks cleaner and less redundant actions are performed in rendering logic.

Pull request checklist:

• Briefly describe the changes in this PR.
• Include before/after visuals or gifs if this PR includes visual changes.
• Write tests for all new functionality. If tests were not written, please explain why.
• Optimize code for java consumption (@JvmOverloads, @file:JvmName, etc).
• Add example if relevant.
• Document any changes to public APIs.
• Apply changelog label ('breaking change', 'bug 🪲', 'build', 'docs', 'feature 🍏', 'performance ⚡', 'testing 💯') or use the label 'skip changelog'
• Add an entry inside this element for inclusion in the mapbox-maps-android changelog: <changelog>Fix dropping / crashing in user events scheduled on a render thread with MapView#queueEvent. Refactor scheduling logic for render thread in general slightly improving rendering performance.</changelog>.
• If this PR is a v10.[version] release branch fix / enhancement, merge it to main firstly and then port to v10.[version] release branch.

Fixes: #1044

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[Chaoba]

LGTM