build(FEC-13273): Refactor webpack configuration Remove IE support and reduce bundle size

[JonathanTGold]

Description of the Changes

• Upgrade the Webpack deps to align with the latest version
• Refactor the webpack config to the newest syntax and best practices to reduce bundle
• Fix the source-map configuration to enable proper debugging
• Remove deprecated/unnecessary dependencies
• Remove redundant/unused scripts from the package.json
• Remove dist folder from the git tracked files on git
• Add Safari & Firefox to script test (currently only chrome is covered)
• Configure the package as multi exported modules as it should be

Asset Name	Before	After	Reduction %
playkit-ovp-provider.js	47.7 KiB	35.7 KiB	25.13%
playkit-ott-provider.js	31.3 KiB	22.2 KiB	29.14%
playkit-analytics-service.js	10.5 KiB	7.81 KiB	25.90%
playkit-bookmark-service.js	9.17 KiB	6.76 KiB	26.32%
playkit-stats-service.js	9.82 KiB	7.16 KiB	27.06%
Total Improvement			26.11%

solves FEC-13273

CheckLists

• changes have been done against master branch, and PR does not conflict
• new unit / functional tests have been added (whenever applicable)
• test are passing in local environment
• Travis tests are passing (or test results are not worse than on master branch :))
• Docs have been updated

[SivanA-Kaltura]

does this change require you to also make changes in the imports in packages that use one of the dist exports, like kava plugin which uses analytics service ?

[SivanA-Kaltura]

upload-to-npm step in Github Actions calls "yarn run build"

see https://github.com/kaltura/ovp-pipelines-pub/blob/e37e02ef9ecb337b28f1142c9ead9f0982804f69/.github/workflows/player_upload_to_npm.yaml#L155

[SivanA-Kaltura]

does defaults support the browsers that the player needs to support ?