add pallet macro kitchensink example/template (#14052)

* add pallet macro kitchen-sink pallet

* update

* Adds benchmarking setup

* Updates APIs

* Fixes benchmark

* Uses derive_impl for frame_system

* Adds benchmarks

* Minor update

* Adds license

* Adds examples crate

* ".git/.scripts/commands/fmt/fmt.sh"

* Update frame/examples/kitchensink/src/tests.rs

Co-authored-by: Kian Paimani <[email protected]>

* Update frame/examples/kitchensink/src/lib.rs

Co-authored-by: Kian Paimani <[email protected]>

* Update frame/examples/kitchensink/src/lib.rs

Co-authored-by: Kian Paimani <[email protected]>

* Addresses review comments

* Addresses review comments

* ".git/.scripts/commands/fmt/fmt.sh"

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Co-authored-by: Nikhil Gupta <[email protected]>
Co-authored-by: command-bot <>
Co-authored-by: command-bot <[email protected]>