* add events pallet events endpoint
add unit tests
add e2e test

* update docs for pallet events endpoint

* add statemint e2e tests for pallet events endpoint

* update events references

* remove duplicate IPalletEventsParam reference

* lint

* add events check to getPalletMetadataType
add unhappy path check to fetchEventItem unit tests

* merge master

* update abstratpalletservice types
refactored events items assignment

* update error message to reflect more accurately when the pallet metadata has no items to query of a specific field type

* debug historicApi pallets

* update check for isValidPalletName to use the pallet meta data instead of the historicApi

* update error log for when a pallet id is not recognized

* yarn lint

* tests: fix e2e tests, add kusama westend, and remove ws check

* remove grumble

* fix fmt

* Added the `validators` endpoint
- Controller, service, response type
- Returns all validators addresses and their corresponding status (active / waiting)

* Validators Info per block
- Added the `at` query param
- Modified the Service accordingly

* yarn lint

* Changes `array` to `Set` (James Super Tip)
- Changed the data structure used to save the validators in the active set from an `array` to a `Set` (based on James suggestion)
- Changed also the used functions accordingly.
- Merged in one loop the check of which validator is in the active set and the population of the returned array.

* Lint & Update docs
- yarn lint
- Added validators endpoint to the docs
- Corrected other parts of the docs mentioned by the swagger as errors.

* Added in latest e2e tests the validators endpoint

* Changes from Tarik s comments

* Adjustments in the docstring

* Update src/services/pallets/PalletsStakingValidatorsService.ts

Co-authored-by: Tarik Gul <[email protected]>

* yarn lint:fix

Co-authored-by: Tarik Gul <[email protected]>

* add controller and service for errors

* add pallet errors endpoint

* removed unused error query param

* fix newline in response json

* add abstract pallet service

* add AbstractPallerService

* remove dev log

* change access modifier in abstract pallets

* change fn name

* add errors pallet to kusama

* remove unused import
remove newline

* remove lower casing of pallet name in fetchErrors
update latest polkadot e2e tests with PhragmentElection Pallet

* update parsedPalletName

* nomination pools

* chore(deps): updated polkadot-js deps

* feat: support for nomination pools

* update tests

* update nomination pool service

* update test

* remove historicApi as param

* removed historicApi param from nomination pool info service

* lint

* update param info

* update metadata arg, remove legacy docs

* update open-api yml

* update open api refs

* add nomination pools controller to kusama and polkadot controllers

* add comments to nomination pool service fns

* add nomination pool latest e2e test

* feat: add /paras/head

* backed candidates endpoint

* finalize the backed-candidate logic

* fix grumble with return type

* fix types and complete /paras/head logic

* cleanup

* add test for parasHead, and add at field for responses

* add test for backed candidates

* add docs

* add inline docs

* rework the endpoints

* update docs

* remove mute mock data

* update endpoint descriptions

* leases to heads

* adjust inline comment

* add the endpoints to the latest e2e tests

* fix spacing

* test(e2e-tests): outline errors for the process

* add correct error code when sidecar fails to build

* reorg the tsconfig in e2e tests and where the entry file exists

* add endpoints

* change yarn script names to historical for init

* change request format to return statusCode as well as data

* add working script

* some cleanup

* organize naming

* cleanup

* fix tiny grumble

* add license to file

* add script to startup the e2e tests

* fix small blunders, and add scripts to package.json

* set runE2eTests to runHistoricalE2eTests

* add --local to historical e2e tests

* get local working, and fix resolving errors

* fix is local to fail when a chain is not specified

* DRY up code

* update docs in scripts

* docs in e2e-tests

* cleanup

* add all statemint end points

* make `--local` take in an input

* update release notes

* add latest to readme

* new lint