Show additional bug report info in AboutActivity (#3802)

Make it easier for people to find information we need for a bug report,
and show it on AboutActivity.

New info is:

- Device manufacturer (e.g., "Google") and model (e.g., "Pixel 4a (5G)")
- Android version (e.g., "13")
- SDK version (e.g., "33")
- Active account (e.g., "@Tusky@mastodon.social")
- Server's version (e.g., "4.1.2+nightly-20230627")

All info is copyable to make it easy to include in a bug report. A
button to copy the information is also shown.

app/src/main/java/com/keylesspalace/tusky/components/instanceinfo/InstanceInfo.kt

@@ -28,5 +28,6 @@ data class InstanceInfo(
     val maxMediaAttachments: Int,
     val maxFields: Int,
     val maxFieldNameLength: Int?,
-    val maxFieldValueLength: Int?
+    val maxFieldValueLength: Int?,
+    val version: String?
 )

app/src/main/java/com/keylesspalace/tusky/components/instanceinfo/InstanceInfoRepository.kt

@@ -99,7 +99,8 @@ class InstanceInfoRepository @Inject constructor(
                     maxMediaAttachments = instanceInfo?.maxMediaAttachments ?: DEFAULT_MAX_MEDIA_ATTACHMENTS,
                     maxFields = instanceInfo?.maxFields ?: DEFAULT_MAX_ACCOUNT_FIELDS,
                     maxFieldNameLength = instanceInfo?.maxFieldNameLength,
-                    maxFieldValueLength = instanceInfo?.maxFieldValueLength
+                    maxFieldValueLength = instanceInfo?.maxFieldValueLength,
+                    version = instanceInfo?.version
                 )
             }
     }