refactor: use types defined in wasm/types

---
type: pre_commit_static_analysis_report
description: Results of running static analysis checks when committing changes.
report:
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    status: passed
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    status: passed
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  - task: lint_typescript_declarations
    status: passed
  - task: lint_typescript_tests
    status: passed
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    status: passed
---

Author: kgryte

lib/node_modules/@stdlib/wasm/memory/docs/types/index.d.ts

@@ -18,6 +18,8 @@
 
 // TypeScript Version: 4.1
 
+import { Memory as MemoryInterface } from '@stdlib/wasm/types';
+
 /**
 * WebAssembly memory descriptor object.
 */
@@ -41,7 +43,7 @@ interface Descriptor {
 /**
 * Class for creating WebAssembly memory instances.
 */
-declare class Memory {
+declare class Memory implements MemoryInterface {
 	/**
 	* WebAssembly memory instance constructor.
 	*

lib/node_modules/@stdlib/wasm/memory/docs/types/test.ts

@@ -28,7 +28,7 @@ import Memory = require( './index' );
 	new Memory( { 'initial': 0 } ); // $ExpectType Memory
 }
 
-// The constructor function has to be invoked with `new`...
+// The constructor function has to be invoked with the `new` operator...
 {
 	Memory( { 'initial': 0 } ); // $ExpectError
 }