Update domain references to pezkuwichain.app and rebrand from polkadot

.gitignore

@@ -0,0 +1,35 @@
+build/
+build-*/
+coverage/
+node_modules/
+tmp/
+NOTES.md
+.DS_Store
+.env.local
+.env.development.local
+.env.test.local
+.env.production.local
+.npmrc
+.yarn/*
+!.yarn/releases
+!.yarn/plugins
+.pnp.*
+cc-test-reporter
+lerna-debug.log*
+master-chrome-build.zip
+master-chrome-src.zip
+master-ff-build.zip
+master-ff-src.zip
+npm-debug.log*
+tsconfig.*buildinfo
+yarn-debug.log*
+yarn-error.log*
+package-lock.json
+_book
+docs/html
+.idea
+.vscode
+packages/extension/manifest.json
+
+# Diff script generates ff-diff
+ff-diff