using window.find() for searching

Search API from codetoart/r2-streamer-kotlin now use window.find() instead of Rangy solution.

Migrated to AndroidX

• FolioReader migrated to AndroidX.
• Search API calls made asynchronous.

Added Locator using CFI

ReadLocator and SearchLocator using CFI

Replaced r2-streamer-java with r2-streamer-kotlin

• r2-streamer-java replaced with r2-streamer-kotlin and r2-shared-kotlin
• WebViewMarker replaced with Native text selection popup.
• Media Overlay feature temporarily unavailable, see KNOWN_ISSUES.md for more information.

Search Implementation and Bug fixes

Merge pull request #256 from codetoart/master

Search implementation - v0.4.1

v0.4.0

1. Horizontal Scrolling implemented
2. Bug fixed & Performance improvements

Bug fixes

Merge pull request #206 from codetoart/master

used Zip4j library and bug fixed

Bug Fixes

Merge pull request #199 from codetoart/master

Fixed app crashing for android api verison < 26

Last Read Position syncable

1. Made Last Read Position syncable across devices

Bug Fixes

1. Compile error with build tools version 26 is fixed
2. Highlighting improved