[ImgBot] Optimize images (#389)

*Total -- 592.51kb -> 414.81kb (29.99%)

/streamerbot/4.examples/assets/quote-check-command-input.png -- 25.05kb -> 8.45kb (66.28%)
/streamerbot/4.examples/assets/quote-get-finished-action.png -- 55.59kb -> 19.42kb (65.07%)
/streamerbot/4.examples/assets/quote-del-finished-action.png -- 40.95kb -> 14.62kb (64.28%)
/streamerbot/3.api/1.sub-actions/core/quotes/assets/get-quote.png -- 9.39kb -> 4.74kb (49.52%)
/streamerbot/3.api/1.sub-actions/core/quotes/assets/delete-quote.png -- 8.09kb -> 4.14kb (48.85%)
/streamerbot/3.api/1.sub-actions/core/quotes/assets/add-quote.png -- 8.42kb -> 4.49kb (46.75%)
/streamerbot/3.api/1.sub-actions/core/logic/assets/switch-add-case-dialog.png -- 15.49kb -> 10.00kb (35.41%)
/streamerbot/3.api/4.websocket/0.guide/assets/websocket-config.png -- 141.81kb -> 98.41kb (30.61%)
/streamerbot/3.api/1.sub-actions/core/csharp/assets/execute-csharp-method.png -- 23.63kb -> 16.65kb (29.55%)
/streamerbot/2.guide/assets/key-press-trigger.png -- 9.96kb -> 7.07kb (28.98%)
/streamerbot/3.api/1.sub-actions/core/logic/assets/switch-add-case-context-menu.png -- 24.25kb -> 18.75kb (22.69%)
/streamerbot/3.api/1.sub-actions/core/csharp/assets/execute-csharp-code.png -- 74.31kb -> 58.47kb (21.32%)
/streamerbot/1.get-started/assets/linux-bottles-new.png -- 56.83kb -> 53.52kb (5.82%)
/streamerbot/1.get-started/assets/linux-bottles-launch.png -- 22.14kb -> 20.87kb (5.73%)
/streamerbot/1.get-started/assets/linux-bottles-install-programs.png -- 43.38kb -> 42.59kb (1.84%)
/streamerbot/1.get-started/assets/linux-bottles-installers.png -- 33.21kb -> 32.63kb (1.76%)

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Author: imgbot[bot]