Convert jsonrpc & typings to definitions (#2064)

* Convert jsonrpc & typings to definitions

* Handle empty interface generation (no types)

* Move jsonrpc/create to rpc-core/create

* Create imports

* Remove jsonrpc package, generate rpc-core from defs

* Debug :)

* Generate RPC definitions via interfaces

* Generate md docs

* Remove @polkadot/jsonrpc refs (at least packages)

* No empty types

* Add PAHNTOM "cleanup" gen

* *sigh* regex loop

* Update mock for no jsonrpc

* Add definition export types

* Cleanup linting

* Mocking 1 fix

* Mocking 2 fix

* rpc-core tests updates

* CHANGELOG & docs

* Add jsonrpc (already mapped) to interfaces

* Add aliasses for RPCs

* Fix rpc-core tests

packages/rpc-core/package.json

@@ -27,7 +27,6 @@
   "homepage": "https://github.com/polkadot-js/api/tree/master/packages/rpc-core#readme",
   "dependencies": {
     "@babel/runtime": "^7.8.7",
-    "@polkadot/jsonrpc": "1.8.0-beta.2",
     "@polkadot/metadata": "1.8.0-beta.2",
     "@polkadot/rpc-provider": "1.8.0-beta.2",
     "@polkadot/types": "1.8.0-beta.2",