* fix(rpc module): fail subscription with bad params

* draft; show my point

* fix tests

* fix build

* add tests for proc macros too

* add tests for bad params in proc macros

* fix nits

* commit all files

* add ugly fix for proc macro code

* add more user friendly API

* make SubscriptionSink::close take mut self

* fix grumbles

* show james some code

* Update core/src/server/rpc_module.rs

Co-authored-by: James Wilson <james@jsdw.me>

* remove needless clone

* fix build

* client fix docs + error type

* simplify code: merge connect reset and unsubscribe close reason

* remove unknown close reason

* refactor: remove Error::SubscriptionClosed

* add some nice APIs to ErrorObjectOwned

* unify api

* address grumbles

* remove redundant methods for close and reject

* proc macro: compile err when subscription -> Result

* rpc module: fix test subscription test

* Update core/src/server/rpc_module.rs

Co-authored-by: James Wilson <james@jsdw.me>

* Update core/src/server/rpc_module.rs

Co-authored-by: James Wilson <james@jsdw.me>

* Update core/src/server/rpc_module.rs

Co-authored-by: James Wilson <james@jsdw.me>

* Update core/src/server/rpc_module.rs

Co-authored-by: James Wilson <james@jsdw.me>

* Update core/src/server/rpc_module.rs

Co-authored-by: James Wilson <james@jsdw.me>

* Update proc-macros/src/lib.rs

Co-authored-by: James Wilson <james@jsdw.me>

* address grumbles

* remove faulty comment

* Update core/src/server/rpc_module.rs

Co-authored-by: David <dvdplm@gmail.com>

* Update core/src/server/rpc_module.rs

Co-authored-by: David <dvdplm@gmail.com>

* Update core/src/server/rpc_module.rs

Co-authored-by: David <dvdplm@gmail.com>

* Update core/src/server/rpc_module.rs

Co-authored-by: David <dvdplm@gmail.com>

* Update core/src/server/rpc_module.rs

Co-authored-by: David <dvdplm@gmail.com>

* fix: don't send `RPC Call failed: error`.

* remove debug assert

Co-authored-by: James Wilson <james@jsdw.me>
Co-authored-by: David <dvdplm@gmail.com>