Add experimental/pedometer (#1587)

* Add `experimental/pedometer`

* Fixup for linter warnings

* Update CI config

experimental/pedometer/src/health_connect/CMakeLists.txt

@@ -0,0 +1,32 @@
+# jni_native_build (Build with jni:setup. Do not delete this line.)
+
+# The Flutter tooling requires that developers have CMake 3.10 or later
+# installed. You should not increase this version, as doing so will cause
+# the plugin to fail to compile for some customers of the plugin.
+cmake_minimum_required(VERSION 3.10)
+
+project(health_connect VERSION 0.0.1 LANGUAGES C)
+
+add_library(health_connect SHARED
+  "./health_connect.c"
+)
+
+set_target_properties(health_connect PROPERTIES
+  OUTPUT_NAME "health_connect"
+)
+
+target_compile_definitions(health_connect PUBLIC DART_SHARED_LIB)
+
+if(WIN32)
+	set_target_properties(${TARGET_NAME} PROPERTIES
+		LINK_FLAGS "/DELAYLOAD:jvm.dll")
+endif()
+
+if (ANDROID)
+	target_link_libraries(health_connect log)
+else()
+	find_package(Java REQUIRED)
+	find_package(JNI REQUIRED)
+	include_directories(${JNI_INCLUDE_DIRS})
+	target_link_libraries(health_connect ${JNI_LIBRARIES})
+endif()