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## Description
Closes: #10264
This PR makes 2 changes in the CLI:
### 1. Add an `--aux` flag to all tx command.
```bash
simd tx bank send <from> <to> <amount> --aux (optional: --tip <tipAmt> --tipper <tipper>)
```
This will print an AuxSignerData instead of broadcasting the tx.
### 2. Add a new `aux-to-fee` subcommand
```bash
simd tx aux-to-fee <aux_signer_data.json>
```
This takes the output of the previous command, and broadcasts a 2-signer tx.
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## Description
R4R
Closes: #9912
This PR introduces 1 new middleware:
- `TipsMiddleware`: transfer tip from tipper to feePayer when relevant.
It also makes sure in the DIRECT_AUX sign mode handler that the fee payer cannot use that sign mode.
Depends on:
- [x] #10028
- [x] #10268
- [x] #10322
- [x] #10346
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---
### Author Checklist
*All items are required. Please add a note to the item if the item is not applicable and
please add links to any relevant follow up issues.*
I have...
- [ ] included the correct [type prefix](https://github.com/commitizen/conventional-commit-types/blob/v3.0.0/index.json) in the PR title
- [ ] added `!` to the type prefix if API or client breaking change
- [ ] targeted the correct branch (see [PR Targeting](https://github.com/cosmos/cosmos-sdk/blob/master/CONTRIBUTING.md#pr-targeting))
- [ ] provided a link to the relevant issue or specification
- [ ] followed the guidelines for [building modules](https://github.com/cosmos/cosmos-sdk/blob/master/docs/building-modules)
- [ ] included the necessary unit and integration [tests](https://github.com/cosmos/cosmos-sdk/blob/master/CONTRIBUTING.md#testing)
- [ ] added a changelog entry to `CHANGELOG.md`
- [ ] included comments for [documenting Go code](https://blog.golang.org/godoc)
- [ ] updated the relevant documentation or specification
- [ ] reviewed "Files changed" and left comments if necessary
- [ ] confirmed all CI checks have passed
### Reviewers Checklist
*All items are required. Please add a note if the item is not applicable and please add
your handle next to the items reviewed if you only reviewed selected items.*
I have...
- [ ] confirmed the correct [type prefix](https://github.com/commitizen/conventional-commit-types/blob/v3.0.0/index.json) in the PR title
- [ ] confirmed `!` in the type prefix if API or client breaking change
- [ ] confirmed all author checklist items have been addressed
- [ ] reviewed state machine logic
- [ ] reviewed API design and naming
- [ ] reviewed documentation is accurate
- [ ] reviewed tests and test coverage
- [ ] manually tested (if applicable)
atheeshp
Amaury
Robert Zaremba
Marie Gauthier
Aaron Craelius
Alexander Bezobchuk
billy rennekamp