feat(ABR): ABR Manager Min forward buffer (duration) to increase quality abr.minBufferAheadToUpgrade

[Iragne]

I would like to have a parameter in the ABR configuration that will not allow the variant change to an higher quality if the filled buffer is below a threshold.
By default this should be set to 0, more over to some low latency setup.
if the next variant has an equal or higher (>=) bandwidth and the forward buffer is not filled, we just not jump to the next quality. if the buffer is fill with this X duration we can change variant.
If the new variant is lower (<) in term of bandwidth we switch. (this is to protect the going down situation where we are already in bad shape with that current variant)
if no current variant we switch.
if the duration of the current playback till the end of the manifest is smaller to that value we allow the switch. it clearly a bad configuration. (TBD it can be the manifest that has delay and i'm not sure we should do that...)

Close #10263

[Iragne]

@avelad sorry i had issue with my account better this PR

[Iragne]

I'm still not sure we should do that https://github.com/shaka-project/shaka-player/pull/10280/changes#diff-c620ac9f1f7d7edd591bf600973db0235bcdcd215ae6b226e0597cec35ab88deR564. It can lead to bad switching due to out of date manifest

[shaka-bot]

Bundle Size Report for PR #10280

File	HEAD	Base	Diff
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shaka-player.ui.js	1016.0 KiB (322.1 KiB)	1015.6 KiB (322.0 KiB)	+0.4 KiB

[shaka-bot]

Incremental code coverage: 89.13%