Rename RippleAPI client to Client (#1520)

* rename RippleAPI -> XrplClient

* more renames

* move API stuff to client folder

* rename all api -> client

* fix tests

* make tests run

* fix integ tests

* fix urls

* fix merge issues

* XrplClient -> Client

* fix merge issues

* rename xrpl-client npm symlink to xrpl-local

test/client/getBalanceSheet/index.ts

@@ -0,0 +1,26 @@
+import {assertRejects, assertResultMatch, TestSuite} from '../../utils'
+
+/**
+ * Every test suite exports their tests in the default object.
+ * - Check out the "TestSuite" type for documentation on the interface.
+ * - Check out "test/client/index.ts" for more information about the test runner.
+ */
+export default <TestSuite>{
+  'getBalanceSheet': async (client, address) => {
+    await client.getBalanceSheet(address)
+  },
+
+  'getBalanceSheet - invalid options': async (client, address) => {
+    await assertRejects(
+      // @ts-ignore - This is intentionally invalid
+      client.getBalanceSheet(address, {invalid: 'options'}),
+      client.errors.ValidationError
+    )
+  },
+
+  'getBalanceSheet - empty': async (client, address) => {
+    const options = {ledgerVersion: 123456}
+    const result = await client.getBalanceSheet(address, options)
+    assertResultMatch(result, {}, 'getBalanceSheet')
+  }
+}