Initialize release branch flutter-3.47-candidate.0

bin/internal/release-candidate-branch.version

diff --git a/bin/internal/release-candidate-branch.version b/bin/internal/release-candidate-branch.version
new file mode 100644
index 0000000..9ce5ccd
--- /dev/null
+++ b/bin/internal/release-candidate-branch.version
@@ -0,0 +1 @@
+flutter-3.47-candidate.0
\ No newline at end of file