[ios] #3979 compress telemetry events (#5490)

* [ios] #3979 wip gzip telemetry events

* [ios] expose compression from core instead of adding a new dependency

* [ios] #3979 Exposed decompress from mbgl and added a test case

* [ios] #3979 cleanup

* [ios] #3979 cleaned up test case

* [ios] #3979 cleanup

* [ios] #3979 gzip -> deflate

1 files changed, 12 insertions, 0 deletions

diff --git a/include/mbgl/util/compression.hpp b/include/mbgl/util/compression.hpp
new file mode 100644
index 0000000000..5e232187c3
--- /dev/null
+++ b/include/mbgl/util/compression.hpp
@@ -0,0 +1,12 @@
+#pragma once
+
+#include <string>
+
+namespace mbgl {
+namespace util {
+        
+std::string compress(const std::string& raw);
+std::string decompress(const std::string& raw);
+    
+} // namespace util
+} // namespace mbgl