Integrate WYSIWYG editor (#7288)

* Add WYSIWYG lib dependency

* Replace EditText with RichTextEditor

* Add bold button, fix sending formatting messages issues

* Add missing inline formatting buttons, make scrollview horizontal

* Disable autocomplete for rich text editor

* Add formatted text to messages sent, replies, quotes and edited messages.

* Several fixes

* Add changelog

* Try to fix lint issues

* Address review comments.

* Exclude Epoxy KSP generated files from ktlint checks

build.gradle

@@ -148,6 +148,9 @@ allprojects {
             // To have XML report for Danger
             reporter(org.jlleitschuh.gradle.ktlint.reporter.ReporterType.CHECKSTYLE)
         }
+        filter {
+            exclude { element -> element.file.path.contains("$buildDir/generated/") }
+        }
         disabledRules = [
                 // TODO Re-enable these 4 rules after reformatting project
                 "indent",