feat(server/v2): add min gas price and check with tx fee (backport #21173)

[mergify]

Description

Closes: #XXXX

• Add minimum-gas-prices config in server config
• Test transaction fee with minimum-gas-prices value in x/auth/tx TxValidator method.
• Update few commands and confix related to server config

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Summary by CodeRabbit

Summary by CodeRabbit

• New Features

  • Introduced minimum gas price validation for transaction processing.
  • Enhanced control flow by adding a validation step for transaction fees.
  • Improved server configuration management with a new structured configuration system.
  • Added methods for better handling of server configuration and command-line flags.
  • Allowed chain developers to overwrite default server configurations.
  • Incorporated a fee transaction validator to manage transaction fees within the application module.

• Bug Fixes

  • Improved error handling for insufficient transaction fees.

• Chores

  • Refined dependency management for mathematical operations.
  • Enhanced command-line interface capabilities for server commands.

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This is an automatic backport of pull request #21173 done by [Mergify](https://mergify.com).

[mergify]

Cherry-pick of 81a225e has failed:

On branch mergify/bp/release/v0.52.x/pr-21173
Your branch is up to date with 'origin/release/v0.52.x'.

You are currently cherry-picking commit 81a225e6a.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --skip" to skip this patch)
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Changes to be committed:
	modified:   simapp/v2/simdv2/cmd/commands.go
	modified:   simapp/v2/simdv2/cmd/config.go
	modified:   simapp/v2/simdv2/cmd/testnet.go
	modified:   tests/systemtests/staking_test.go
	modified:   tools/confix/data/v2-app.toml
	modified:   tools/confix/migrations.go
	modified:   x/auth/ante/fee.go
	modified:   x/auth/ante/fee_test.go
	modified:   x/auth/ante/validator_tx_fee.go
	modified:   x/auth/tx/config/depinject.go
	modified:   x/auth/tx/config/module.go

Unmerged paths:
  (use "git add/rm <file>..." as appropriate to mark resolution)
	deleted by us:   server/v2/commands.go
	deleted by us:   server/v2/config.go
	deleted by us:   server/v2/flags.go
	deleted by us:   server/v2/server.go
	deleted by us:   server/v2/server_test.go
	deleted by us:   server/v2/testdata/app.toml

To fix up this pull request, you can check it out locally. See documentation: https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/reviewing-changes-in-pull-requests/checking-out-pull-requests-locally

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[github-actions]

@mergify[bot] your pull request is missing a changelog!