refactor: impl Trie for MPTTrie

[yangby-cryptape]

What this PR does / why we need it?

• I want to add methods to MPTTrie<DB> in another crate.

  Limit by the orphan rule, I have to use a trait to add methods to MPTTrie<DB>.

  • If I use a trait to add methods to MPTTrie<DB>, I could NOT write the following code:

    pub trait TrieExt<BD>: MPTTrie<DB> {
        /* Use methods of `MPTTrie<DB>` in trait body. */
    }

    , since MPTTrie<DB> is a struct, but I can write the following code:

    pub trait TrieExt: Trie {
        /* Use methods of `Trie` in trait body. */
    }

• Some methods of MPTTrie<DB> are not exposed, for example, get_proof(..) and verify_proof(..).

• Another reason:

  In fact, MPTTrie<DB> is a Trie, we should use it as Trie directly.

  Trie is in a higher level of TrieDB in abstract.

  Treat MPTTrie<DB> as as a TrieDB is not reasonable.

What is the impact of this PR?

No Breaking Change

CI Settings

CI Usage

Tip: Check the CI you want to run below, and then comment /run-ci.

CI Switch

• Coverage Test
• E2E Tests
• Code Format
• Web3 Compatible Tests
• OCT 1-5 And 12-15
• OCT 6-10
• OCT 11
• OCT 16-19
• v3 Core Tests

CI Description

CI Name	Description
Chaos CI	Test the liveness and robustness of Axon under terrible network condition
Cargo Clippy	Run cargo clippy --all --all-targets --all-features
Coverage Test	Get the unit test coverage report
E2E Test	Run end-to-end test to check interfaces
Code Format	Run cargo +nightly fmt --all -- --check and cargo sort -gwc
Web3 Compatible Test	Test the Web3 compatibility of Axon
v3 Core Test	Run the compatibility tests provided by Uniswap V3
OCT 1-5 | 6-10 | 11 | 12-15 | 16-19	Run the compatibility tests provided by OpenZeppelin

[KaoImin]

The MPTTrie in wrapped.rs seems useless after these changes, consider removing it by the following:

pub type MPTTrie<DB: trie::DB> = trie::PatriciaTrie<DB, HasherKeccak>;

[yangby-cryptape]

The MPTTrie in wrapped.rs seems useless after these changes, consider removing it by the following:

pub type MPTTrie<DB: trie::DB> = trie::PatriciaTrie<DB, HasherKeccak>;

MPTTrie has its own class methods.
Limit by the orphan rule, we could not add methods to trie::PatriciaTrie.

I only remove the class methods which are conflict with trait methods of Trie.

[axon-bot]

CI tests run on commit:

• commit id: fcf15ad

CI test list:

• Code Format
• E2E Tests
• OCT 1-5 And 12-15
• OCT 6-10
• OCT 11
• OCT 16-19
• v3 Core Tests
• Web3 Compatible Tests

Please check ci test results later.