* update polkadot-v0.9.5 deps

* update cumulus polkadot-v0.9.5

* checkout to account ExistentialDeposit

* update doc

* implement fungible and fungibles for tokens

* fix clippy

* add TODO

* add helper do_transfer

* Apply review suggestions

Signed-off-by: Gregory Hill <gregorydhill@outlook.com>

* Converted Vec storage to BoundedVec

* Updated tokens impl

* Added MaximumLocksExceeded error

* Renamed error MaximumLocksExceeded to MaxLocksExceeded

* Test for exceeding maximum locks

* Added MaxEncodedLen derives

* Removed explicit Result return

* rename MergeAccount to TransferAll

* fix

* Migrated auction mock file to construct_runtime macro

* Migrated currencies mock file to contruct_runtime

* Migrated gradually-update mock file to construct_runtime

* Migrated nft mock file to construct_runtime macro

* Migrated oracle mock file to construct_runtime

* Migrated rewards mock file to construct_runtime macro

* Migrated mock file to construct_runtime macro

* Migrated mock file to construct_runtime macro

* Tidy up oracle module.

* Tokens and currencies module.

* Apply convention to modules.

* migrate auction module

* migrate authority module

* migrate tokens module

* fix clippy

* update LockableCurrency to return resut

* update tests

* Apply substrate breaking change.

* Fix readme typo.

* refactor try_mutate_account

* remove OnReceived

* update substrate

* update benmchmarks

* add currencyAdapter

* adjust imblances

* add unit test

* impl OnReceived for tokens

* update storage map keys of tokens

* remove ExistentialDeposit

* switch subsrate dependencies to crates.io

* add constructor for CheckOperator

* refactor the traits related to Currency

* format code

* modify

* update test cases

* update test cases

Co-authored-by: Xiliang Chen <xlchen1291@gmail.com>

* Add dust removal and transfer_all in orml-tokens.

* Ensure existential rule for transfer, deposit and withdraw.

* orml-tokens transfer: return error if dest balance is zero and transfer amount below existential deposit.

* set_balance helper.

* Existential deposit unit tests.

* Fix orml-currencies mock.

* Renaming.

* Update transfer_all in orml-tokens.

* rename to FRAME

* fix test

* Rename paint to palette.

* Fix typo.

* Update comments.

* rename srml to paint

* fix case

* Update slash: return gap instead of slashed amount.

* Add unit test for tokens module slash.

* Tokens module: impl MultiCurrencyExtended.

* Minor fixes.

* Error type for MultiCurrency trait and tokens module.

* fmt

* Update error type.

* Update transfer unit test.

* Tokens module unit tests.

* Remove workspace src directory

* Add example crate.

* fmt

* Update example.

* Minor fixes.

* Remove allow dead code.