fix(build): migrate project tooling and tests to the smartconfig setup and updated IndexedDB dependencies

patches/agentkeepalive@4.5.0.patch

@@ -0,0 +1,16 @@
+diff --git a/History.md b/History.md
+deleted file mode 100644
+index 6877834dd92a5c71416d47b8d5f92a16aff5c1e6..0000000000000000000000000000000000000000
+diff --git a/index.js b/index.js
+index 6ca1513463724d5ab388b5fa4cfc44df0d93ff3d..cfe41dce77cb5e402e917980b0895c379b8f2033 100644
+--- a/index.js
++++ b/index.js
+@@ -1,5 +1,7 @@
+ 'use strict';
+ 
+-module.exports = require('./lib/agent');
++const HttpAgent = require('./lib/agent');
++module.exports = HttpAgent;
++module.exports.HttpAgent = HttpAgent;
+ module.exports.HttpsAgent = require('./lib/https_agent');
+ module.exports.constants = require('./lib/constants');