Update docs links replacing BandyerSDK with KaleyraVideoSDK
Update documentation links
Updated MigrationGuide from 2.x to 3.0.0 (markdown)
Update 3.0 migration guide adding manual recording chapters
Update migration guide fixing code snippet
Update 3.0 migration guide adding link to rest api doc
Update 3.0 migration guide fixing code snippets and some statements
Add migration guide from 2.x to 3.0