Enable plonk verification in pallet, change merkle tree logic

[codecov[bot]]

Codecov Report

Patch coverage: 92.57% and project coverage change: -0.17% :warning:

Comparison is base (9f88067) 80.85% compared to head (5220df7) 80.68%. Report is 18 commits behind head on master.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #124 +/- ## ========================================== - Coverage 80.85% 80.68% -0.17% ========================================== Files 83 82 -1 Lines 5019 5044 +25 ========================================== + Hits 4058 4070 +12 - Misses 961 974 +13 ``` | [Files Changed](https://app.codecov.io/gh/KogarashiNetwork/Kogarashi/pull/124?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=KogarashiNetwork) | Coverage Δ | | |---|---|---| | [primitive/pairing/src/lib.rs](https://app.codecov.io/gh/KogarashiNetwork/Kogarashi/pull/124?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=KogarashiNetwork#diff-cHJpbWl0aXZlL3BhaXJpbmcvc3JjL2xpYi5ycw==) | `95.12% <ø> (ø)` | | | [primitive/poly/src/kzg.rs](https://app.codecov.io/gh/KogarashiNetwork/Kogarashi/pull/124?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=KogarashiNetwork#diff-cHJpbWl0aXZlL3BvbHkvc3JjL2t6Zy5ycw==) | `98.14% <ø> (ø)` | | | [primitive/redjubjub/src/lib.rs](https://app.codecov.io/gh/KogarashiNetwork/Kogarashi/pull/124?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=KogarashiNetwork#diff-cHJpbWl0aXZlL3JlZGp1Ymp1Yi9zcmMvbGliLnJz) | `0.00% <0.00%> (ø)` | | | [...e/zkstd/src/arithmetic/limbs/bits\_256/represent.rs](https://app.codecov.io/gh/KogarashiNetwork/Kogarashi/pull/124?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=KogarashiNetwork#diff-cHJpbWl0aXZlL3prc3RkL3NyYy9hcml0aG1ldGljL2xpbWJzL2JpdHNfMjU2L3JlcHJlc2VudC5ycw==) | `96.29% <ø> (ø)` | | | [pallets/confidential\_transfer/src/lib.rs](https://app.codecov.io/gh/KogarashiNetwork/Kogarashi/pull/124?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=KogarashiNetwork#diff-cGFsbGV0cy9jb25maWRlbnRpYWxfdHJhbnNmZXIvc3JjL2xpYi5ycw==) | `81.81% <33.33%> (ø)` | | | [pallets/plonk/src/lib.rs](https://app.codecov.io/gh/KogarashiNetwork/Kogarashi/pull/124?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=KogarashiNetwork#diff-cGFsbGV0cy9wbG9uay9zcmMvbGliLnJz) | `60.52% <50.00%> (+0.52%)` | :arrow_up: | | [primitive/jubjub/src/curve.rs](https://app.codecov.io/gh/KogarashiNetwork/Kogarashi/pull/124?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=KogarashiNetwork#diff-cHJpbWl0aXZlL2p1Ymp1Yi9zcmMvY3VydmUucnM=) | `64.28% <50.00%> (-28.58%)` | :arrow_down: | | [pallets/zkrollup/src/lib.rs](https://app.codecov.io/gh/KogarashiNetwork/Kogarashi/pull/124?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=KogarashiNetwork#diff-cGFsbGV0cy96a3JvbGx1cC9zcmMvbGliLnJz) | `72.00% <70.00%> (-3.00%)` | :arrow_down: | | [primitive/zkrollup/src/domain/user.rs](https://app.codecov.io/gh/KogarashiNetwork/Kogarashi/pull/124?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=KogarashiNetwork#diff-cHJpbWl0aXZlL3prcm9sbHVwL3NyYy9kb21haW4vdXNlci5ycw==) | `87.09% <85.71%> (+0.43%)` | :arrow_up: | | [primitive/bls12\_381/src/fr.rs](https://app.codecov.io/gh/KogarashiNetwork/Kogarashi/pull/124?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=KogarashiNetwork#diff-cHJpbWl0aXZlL2JsczEyXzM4MS9zcmMvZnIucnM=) | `97.16% <86.20%> (-1.95%)` | :arrow_down: | | ... and [19 more](https://app.codecov.io/gh/KogarashiNetwork/Kogarashi/pull/124?src=pr&el=tree-more&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=KogarashiNetwork) | | ... and [2 files with indirect coverage changes](https://app.codecov.io/gh/KogarashiNetwork/Kogarashi/pull/124/indirect-changes?src=pr&el=tree-more&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=KogarashiNetwork)

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