Feature: Spacebar for play/pause and 2x speed

[iamBhanuRathore]

PR Fixes:

• 1 In the Video player before for playing the video in 2x the user have to long press the T [key] but now the user can use the Spacebar for play/pause the video and Long press for playing video in 2x same as Youtube because we are using all the same keyboard shortcuts as Youtube.

Checklist before requesting a review

• I have performed a self-review of my code
• I assure there is no similar/duplicate pull request regarding same issue

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