feat: remove Buffer support and bundle polyfill (#2526)

- Removes need for bundlers to polyfill the `Buffer` class. `UInt8Array` are used instead which are native to the browser and node.
- Reduces bundle size 7.1kb gzipped and eliminates 4 runtime dependencies: `base-x`, `base64-js`, `buffer`, and `ieee754`.

BREAKING CHANGE: All methods that previously took a `Buffer` now accept a `UInt8Array`.

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Co-authored-by: Jackson Mills <jmills@ripple.com>

packages/ripple-binary-codec/package.json

@@ -13,7 +13,6 @@
   "dependencies": {
     "@xrplf/isomorphic": "^1.0.0-beta.0",
     "bignumber.js": "^9.0.0",
-    "buffer": "6.0.3",
     "ripple-address-codec": "^5.0.0-beta.0"
   },
   "scripts": {