feat(client): client extensions types (#16019)

* simplify internal client types

* begin base internal $extends

* apply suggestions from review

* feat(client): client extension types

* improve type performance

* use better implementation of omit

* fix result inference for argument inferred for needs

* first implementation of query extension types

* simplify types

* introduce getExtensionModel & getExtensionClient

* introduce getExtensionContext

* handle $allModels and $ for top-level

* chore(client): remove unneeded addition

* cleanup

* protect typegen behind flag

* fix extends test

* for $ for client layer extensions

packages/client/helpers/build.ts

@@ -82,8 +82,6 @@ const generatorBuildConfig: BuildOptions = {
   emitTypes: false,
 }
 
-void build([generatorBuildConfig, nodeRuntimeBuildConfig, browserBuildConfig, edgeRuntimeBuildConfig])
-
 void build([
   generatorBuildConfig,
   nodeRuntimeBuildConfig,