feat(auth): add web captcha handling

- replace manual captcha screen with WebView-based VK captcha flow
- handle captcha error 14 by showing the captcha overlay and retrying with success_token
- pass captcha redirect/result state through AppSettings
- remove old captcha ViewModel, navigation, validation, and DI
- add ACRA crash reporting
- add WIP message edit mode UI/state
- update Gradle wrapper, SDK config, and dependencies

core/domain/src/main/kotlin/dev/meloda/fast/domain/OAuthUseCase.kt

@@ -21,7 +21,8 @@ interface OAuthUseCase {
         password: String,
         forceSms: Boolean,
         validationCode: String?,
-        captchaSid: String?,
-        captchaKey: String?
+        captchaSid: String? = null,
+        captchaKey: String? = null,
+        successToken: String? = null
     ): Flow<State<GetSilentTokenResponse>>
 }

core/domain/src/main/kotlin/dev/meloda/fast/domain/OAuthUseCaseImpl.kt

@@ -48,7 +48,8 @@ class OAuthUseCaseImpl(
         forceSms: Boolean,
         validationCode: String?,
         captchaSid: String?,
-        captchaKey: String?
+        captchaKey: String?,
+        successToken: String?
     ): Flow<State<GetSilentTokenResponse>> = flow {
         emit(State.Loading)
 
@@ -58,7 +59,8 @@ class OAuthUseCaseImpl(
             forceSms = forceSms,
             validationCode = validationCode,
             captchaSid = captchaSid,
-            captchaKey = captchaKey
+            captchaKey = captchaKey,
+            successToken = successToken
         ).asState()
 
         emit(newState)