[Origin ARM] Upgrade script and cleanup.

[clement-ux]

Description

This PR aims to create the deployment script to upgrade the current OEHT ARM to the latest contract OriginARM.

Slot overriding

Even if this contract has already been initialized, we will initialize it again because the old storage slot are not aligned with the new storage slot.

Current storage slots:

$ cast storage -r RPC_URL -e ETHERSCAN_API_KEY -c 1 0xd8ff298eaed581f74ab845af62c48acf85b2f05e
╭--------------+-------------+------+--------+-------╮
| Name         | Type        | Slot | Offset | Bytes |
+==============+=============+======+========+=======+
| initialized  | bool        | 0    | 0      | 1     |
|--------------+-------------+------+--------+-------|
| initializing | bool        | 0    | 1      | 1     |
|--------------+-------------+------+--------+-------|
| gap          | uint256[50] | 1    | 0      | 1600  |
|--------------+-------------+------+--------+-------|
| operator     | address     | 51   | 0      | 20    |
|--------------+-------------+------+--------+-------|
| _gap         | uint256[50] | 52   | 0      | 1600  |
╰--------------+-------------+------+--------+-------╯

New storage slots:

$ forge inspect OriginARM storageLayout
╭-----------------------+------------------+------+--------+-------╮
| Name                  | Type             | Slot | Offset | Bytes |
+=======================+==================+======+========+=======+
| operator              | address          | 0    | 0      | 20    |
|-----------------------+------------------+------+--------+-------|
| _gap                  | uint256[49]      | 1    | 0      | 1568  |
|-----------------------+------------------+------+--------+-------|
| traderate0            | uint256          | 50   | 0      | 32    |
|-----------------------+------------------+------+--------+-------|
| traderate1            | uint256          | 51   | 0      | 32    |
|-----------------------+------------------+------+--------+-------|
| crossPrice            | uint256          | 52   | 0      | 32    |
|-----------------------+------------------+------+--------+-------|
| withdrawsQueued       | uint128          | 53   | 0      | 16    |
|-----------------------+------------------+------+--------+-------|
| withdrawsClaimed      | uint128          | 53   | 16     | 16    |
|-----------------------+------------------+------+--------+-------|
| nextWithdrawalIndex   | uint256          | 54   | 0      | 32    |
|-----------------------+------------------+------+--------+-------|
| withdrawalRequests    | mapping          | 55   | 0      | 32    |
|-----------------------+------------------+------+--------+-------|
| fee                   | uint16           | 56   | 0      | 2     |
|-----------------------+------------------+------+--------+-------|
| lastAvailableAssets   | int128           | 56   | 2      | 16    |
|-----------------------+------------------+------+--------+-------|
| feeCollector          | address          | 57   | 0      | 20    |
|-----------------------+------------------+------+--------+-------|
| capManager            | address          | 58   | 0      | 20    |
|-----------------------+------------------+------+--------+-------|
| activeMarket          | address          | 59   | 0      | 20    |
|-----------------------+------------------+------+--------+-------|
| supportedMarkets      | mapping          | 60   | 0      | 32    |
|-----------------------+------------------+------+--------+-------|
| armBuffer             | uint256          | 61   | 0      | 32    |
|-----------------------+------------------+------+--------+-------|
| _gap                  | uint256[38]      | 62   | 0      | 1216  |
|-----------------------+------------------+------+--------+-------|
| vaultWithdrawalAmount | uint256          | 100  | 0      | 32    |
╰-----------------------+------------------+------+--------+-------╯

Governance upgrade

1. & 2. Transfer all OETH and WETH in the ARM to the TreasuryLP address: 0x6E3fddab68Bf1EBaf9daCF9F7907c7Bc0951D1dc. This is done to avoid silly assets per share ration.
2. Timelock approves OETH ARM to pull WETH (as it mint small shares)
3. Upgrade the ARM proxy with new implementation and call initialization.

[naddison36]

Looking good