chore: initialize and available docs

docs/initializeHealth.md

@@ -0,0 +1,19 @@
+# `initializeHealth` Function
+
+The `initializeHealth` function sets up health integration for the application by requesting necessary permissions based on the platform (iOS or Android).
+
+It accepts a `permissions` object with keys `read` and `write`. Use the `HealthLinkPermissions` enum to add permissions to the arrays.
+
+Write method does not support `BloodPressure`, `RestingHeartRate` and `OxygenSaturation`, so I'd recommend not to ask for write permissions for those data types.
+
+---
+
+## **Example Usage**
+
+```typescript
+const permissions = {
+  read: [HealthLinkPermissions.StepCount, HealthLinkPermissions.HeartRate],
+  write: [HealthLinkPermissions.StepCount],
+};
+await initializeHealth(permissions);
+```

docs/isAvailable.md

@@ -0,0 +1,9 @@
+# `isAvailable` Function
+
+## The `isAvailable` function returns a `true` if the SDK is available on the current platform, `false` otherwise.
+
+## **Example Usage**
+
+```typescript
+const available = await isAvailable();
+```