WebView: Use timber for logging

[Codex-]

I found during my last PR that all logs despite the level used in the JS layer would always go to the info level when logged in logcat.

This change simply overrides the onConsoleMessage method to log messages to the correct level.

This allows you to use the logcat filtering in IntelliJ/Android Studio to filter for logs normally and makes the messages less verbose.

The new messages are tagged with WebView and follow the original messages format, although happy to change any of this :)

Old:

2021-03-21 01:25:37.501 7245-7245/org.jellyfin.mobile.debug I/chromium: [INFO:CONSOLE(1)] "nowplaying event: init", source: http://192.168.0.100:8096/web/1372.2199cd4f8b32083a01bb.bundle.js (1)
2021-03-21 01:25:37.501 7245-7245/org.jellyfin.mobile.debug I/chromium: [INFO:CONSOLE(1)] "null", source: http://192.168.0.100:8096/web/chromecastPlayer-plugin.3b1e613c5d041153b04a.bundle.js (1)
2021-03-21 01:25:37.543 7245-7245/org.jellyfin.mobile.debug I/chromium: [INFO:CONSOLE(1444)] "Encountered cast error [object Object]", source: https://www.gstatic.com/cv/js/sender/v1/cast_sender.js (1444)
2021-03-21 01:25:37.544 7245-7245/org.jellyfin.mobile.debug I/chromium: [INFO:CONSOLE(1)] "chromecast error", source: http://192.168.0.100:8096/web/chromecastPlayer-plugin.3b1e613c5d041153b04a.bundle.js (1)
2021-03-21 01:25:53.225 7245-7245/org.jellyfin.mobile.debug I/chromium: [INFO:CONSOLE(2)] "Sending web socket message: KeepAlive", source: http://192.168.0.100:8096/web/main.3309837d9db1402ea3a1.bundle.js (2)
2021-03-21 01:25:53.235 7245-7245/org.jellyfin.mobile.debug I/chromium: [INFO:CONSOLE(2)] "Received KeepAlive from server.", source: http://192.168.0.100:8096/web/main.3309837d9db1402ea3a1.bundle.js (2)
2021-03-21 01:26:23.216 7245-7245/org.jellyfin.mobile.debug I/chromium: [INFO:CONSOLE(2)] "Sending web socket message: KeepAlive", source: http://192.168.0.100:8096/web/main.3309837d9db1402ea3a1.bundle.js (2)

New:

2021-03-21 01:49:02.246 14116-14116/org.jellyfin.mobile.debug V/WebView: SyncPlay WrapperFactory getWrapper: chromecast, http://192.168.0.100:8096/web/main.3309837d9db1402ea3a1.bundle.js (2)
2021-03-21 01:49:02.246 14116-14116/org.jellyfin.mobile.debug V/WebView: SyncPlay WrapperFactory getWrapper: unknown player chromecast, using default wrapper., http://192.168.0.100:8096/web/main.3309837d9db1402ea3a1.bundle.js (2)
2021-03-21 01:49:02.247 14116-14116/org.jellyfin.mobile.debug V/WebView: null, http://192.168.0.100:8096/web/chromecastPlayer-plugin.3b1e613c5d041153b04a.bundle.js (1)
2021-03-21 01:49:02.248 14116-14116/org.jellyfin.mobile.debug V/WebView: nowplaying event: init, http://192.168.0.100:8096/web/1372.2199cd4f8b32083a01bb.bundle.js (1)
2021-03-21 01:49:02.248 14116-14116/org.jellyfin.mobile.debug V/WebView: null, http://192.168.0.100:8096/web/chromecastPlayer-plugin.3b1e613c5d041153b04a.bundle.js (1)
2021-03-21 01:49:02.274 14116-14116/org.jellyfin.mobile.debug E/WebView: Encountered cast error [object Object], https://www.gstatic.com/cv/js/sender/v1/cast_sender.js (1434)
2021-03-21 01:49:02.274 14116-14116/org.jellyfin.mobile.debug V/WebView: chromecast error, http://192.168.0.100:8096/web/chromecastPlayer-plugin.3b1e613c5d041153b04a.bundle.js (1)
2021-03-21 01:49:21.101 14116-14116/org.jellyfin.mobile.debug I/WebView: Sending web socket message: KeepAlive, http://192.168.0.100:8096/web/main.3309837d9db1402ea3a1.bundle.js (2)
2021-03-21 01:49:21.122 14116-14116/org.jellyfin.mobile.debug V/WebView: Received KeepAlive from server., http://192.168.0.100:8096/web/main.3309837d9db1402ea3a1.bundle.js (2)

[Codex-]

Not sure what's happening with the agent:

R8: Missing class: org.conscrypt.ConscryptHostnameVerifier
Writing [v0.0.0-dev.1=1] to /home/vsts/work/1/s/app/build/version.txt
w: /home/vsts/work/1/s/app/src/main/java/org/jellyfin/mobile/bridge/NativeInterface.kt: (99, 30): Parameter 'target' is never used
Note: /home/vsts/work/1/s/app/src/proprietary/java/org/jellyfin/mobile/cast/ChromecastConnection.java uses or overrides a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
R8: Missing class: org.conscrypt.ConscryptHostnameVerifier

[Maxr1998]

Those messages should be fine. Azure just randomly crashes occasionally, restarted the pipeline so it hopefully passes now.

[Codex-]

Rebased and resolved conflicts.