Upgrade ChainBridge and BridgeTransfer pallets to FRAME v2

[h4x3rotab]

FRAMEv2: https://substrate.dev/docs/en/knowledgebase/runtime/pallets#frame-v2

Substrate has upgraded its FRAME (module framework) to v2 in the past year. However we still have two pallets written in v1 syntax. We should upgrade them to v2.

For Bounty Hunters

• Deliverables
  1. A PR to upgrade pallets/{birdge,bridge_transfer} to FRAMEv2
  2. Pass all the unit tests. (Bonus: increase the test coverage as much as possible!)
• Resources
  • To build the project, install llvm-10, clang-10 or above. Then run cargo build --release. We use rust nightly-2021-05-11.
  • To get the unit test coverage, run ./scripts/coverage-pallets.sh

[gitcoinbot]

Issue Status: 1. Open 2. Started 3. Submitted 4. Done

---

This issue now has a funding of 14.302 DOT (400.03 USD @ $27.97/DOT) attached to it as part of the Phala-Network fund.

• If you would like to work on this issue you can 'start work' on the Gitcoin Issue Details page.
• Want to chip in? Add your own contribution here.
• Questions? Checkout Gitcoin Help or the Gitcoin's Discord
• $4,026,977.03 more funded OSS Work available on the Gitcoin Issue Explorer

[gitcoinbot]

Issue Status: 1. Open 2. Started 3. Submitted 4. Done

---

Work has been started.

These users each claimed they can complete the work by 1 month from now.
Please review their action plans below:

1) bernardoaraujor has started work.

• upgrade bridge pallet to FRAME v2
• upgrade bridge_transfer pallet to FRAME v2
• check unit tests

Learn more on the Gitcoin Issue Details page.

[h4x3rotab]

@bernardoaraujor FYI: There's already one submission. He is too fast 😅

[bernardoaraujor]

@bernardoaraujor FYI: There's already one submission. He is too fast sweat_smile

Thanks for letting me know.
I haven't made much progress yet so I'll leave this one to @vinhbhn

@h4x3rotab let me know in case you still need another PR and I'll get back to it.

[gitcoinbot]

Issue Status: 1. Open 2. Started 3. Submitted 4. Done

---

Work for 14.302 DOT (363.13 USD @ $25.15/DOT) has been submitted by:

---

• Learn more on the Gitcoin Issue Details page
• Want to chip in? Add your own contribution here.
• Questions? Checkout Gitcoin Help or the Gitcoin's Discord
• $3,823,032.51 more funded OSS Work available on the Gitcoin Issue Explorer

[gitcoinbot]

Issue Status: 1. Open 2. Started 3. Submitted 4. Done

---

Work for 14.302 DOT (376.14 USD @ $26.39/DOT) has been submitted by:

1. @vinhbhn

@h4x3rotab please take a look at the submitted work:

• PR by @vinhbhn

---

• Learn more on the Gitcoin Issue Details page
• Want to chip in? Add your own contribution here.
• Questions? Checkout Gitcoin Help or the Gitcoin's Discord
• $3,709,600.50 more funded OSS Work available on the Gitcoin Issue Explorer

[h4x3rotab]

Thanks for the contribution. Because of the wallet problem in Gitcoin.co, I will just send the token to your wallet directly.

Are you willing to get notification the next time when we announce some new bounties? I'd also love to chat to hear more from you.

[h4x3rotab]

Paid at: https://polkadot.subscan.io/extrinsic/6548989-1

[vinhbhn]

Thanks for the contribution. Because of the wallet problem in Gitcoin.co, I will just send the token to your wallet directly.

Are you willing to get notification the next time when we announce some new bounties? I'd also love to chat to hear more from you.

Yes, please send me a notification when there is a new bounty. I will try to finish it.

[gitcoinbot]

Issue Status: 1. Open 2. Started 3. Submitted 4. Done

---

Work has been started.

These users each claimed they can complete the work by 3 months ago.
Please review their action plans below:

1) flipchan has started work.

Hey,
I'm ready to start on this. I have worked for various substrate based projects before and I'm more then happy to do this!

Learn more on the Gitcoin Issue Details page.

[gitcoinbot]

Issue Status: 1. Open 2. Started 3. Submitted 4. Done

---

The funding of 14.302 DOT (452.52 USD @ $30.31/DOT) attached to this issue has been cancelled by the bounty submitter

• Questions? Checkout Gitcoin Help or the Gitcoin's Discord
• $6,725,364.62 more funded OSS Work available on the Gitcoin Issue Explorer