Add authorizationStatusForType

Add bridge method for HKHealthStore.authorizationStatusForType to be
able to determine if user actually granted certain write permission.

See: https://developer.apple.com/documentation/healthkit/hkhealthstore/1614154-authorizationstatusfortype?language=objc

RCTAppleHealthKit/RCTAppleHealthKit+TypesAndPermissions.h

@@ -13,5 +13,7 @@
 
 - (NSSet *)getReadPermsFromOptions:(NSArray *)options;
 - (NSSet *)getWritePermsFromOptions:(NSArray *)options;
+- (HKObjectType *)getWritePermFromString:(NSString *)string;
+- (NSString *)getAuthorizationStatusString:(HKAuthorizationStatus)status;
 
 @end

RCTAppleHealthKit/RCTAppleHealthKit+TypesAndPermissions.m

@@ -150,4 +150,18 @@
     return writePermSet;
 }
 
+- (HKObjectType *)getWritePermFromString:(NSString *)writePerm {
+    return [[self writePermsDict] objectForKey:writePerm];
+}
+- (NSString *)getAuthorizationStatusString:(HKAuthorizationStatus)status {
+    switch (status) {
+        case HKAuthorizationStatusNotDetermined:
+            return @"NotDetermined";
+        case HKAuthorizationStatusSharingDenied:
+            return @"SharingDenied";
+        case HKAuthorizationStatusSharingAuthorized:
+            return @"SharingAuthorized";
+    }
+}
+
 @end

RCTAppleHealthKit/RCTAppleHealthKit.m

@@ -268,6 +268,26 @@ RCT_EXPORT_METHOD(saveMindfulSession:(NSDictionary *)input callback:(RCTResponse
     }
 }
 
+RCT_EXPORT_METHOD(authorizationStatusForType:(NSString *)type
+                  resolver:(RCTPromiseResolveBlock)resolve
+                  rejecter:(RCTPromiseRejectBlock)reject
+{
+    self.healthStore = [[HKHealthStore alloc] init];
+
+    if ([HKHealthStore isHealthDataAvailable]) {
+        HKObjectType *objectType = [self getWritePermFromString:type];
+        if (objectType == nil) {
+            reject(@"unknown write permission", nil, nil);
+            return;
+        }
+
+        NSString *status = [self getAuthorizationStatusString:[self.healthStore authorizationStatusForType:objectType]];
+        resolve(status);
+    } else {
+        reject(@"HealthKit data is not available", nil, nil);
+    }
+})
+
 - (void)getModuleInfo:(NSDictionary *)input callback:(RCTResponseSenderBlock)callback
 {
     NSDictionary *info = @{