[TagCloud] Replace the current implementation with the elastic-charts one

[stratoula]

Describe the feature:
Elastic-charts has added Wordcloud on their charts list https://elastic.github.io/elastic-charts/?path=/story/wordcloud-alpha--simple-wordcloud.

We would like to replace the current implementation of tagcloud, implemented with d3, with the elastic-charts one.

Additionally:

• There is a number of files that are still on js. By migrating to the es-charts, let's also ensure that tagcloud is fully converted to TS
• We should ensure that there are no gaps between the two implementations (Gaps here: [Wordcloud] Replace kibana tagcloud with es-charts  elastic-charts#1156)
• We should also check existing bugs and see if they are solved with the new wordcloud implementation
• We can give the users the flexibility to also change palette (now it works with the legacy one). In other words, use the new color service! (syncColors should also work fine)

[elasticmachine]

Pinging @elastic/kibana-app (Team:KibanaApp)

[elasticmachine]

Pinging @elastic/datavis (Feature:ElasticCharts)