[bisq-network/bisq] Verify maker fee transactions (#5160)

[jmacxx]

Related to #5119

- Queries mempool at checkOfferAvailability stage.
- Validates transaction and maker fees.
- Indicates status at UI level.
- If there is a problem it warns user to back out (user can still continue).

You can view, comment on, or merge this pull request online at:

  https://github.com/bisq-network/bisq/pull/5160

-- Commit Summary --

  * 1st iteration of verifying offer maker fee tx.
  * cleanup

-- File Changes --

    A core/src/main/java/bisq/core/provider/MempoolHttpClient.java (43)
    M core/src/main/java/bisq/core/provider/fee/FeeService.java (19)
    A core/src/main/java/bisq/core/provider/mempool/MempoolRequest.java (76)
    A core/src/main/java/bisq/core/provider/mempool/MempoolService.java (125)
    A core/src/main/java/bisq/core/provider/mempool/TxValidator.java (173)
    M core/src/main/java/bisq/core/util/coin/CoinUtil.java (9)
    M core/src/main/resources/i18n/displayStrings.properties (4)
    A core/src/test/java/bisq/core/provider/mempool/TxValidatorTest.java (155)
    A core/src/test/resources/bisq/core/provider/mempool/badOfferTestData.json (10)
    A core/src/test/resources/bisq/core/provider/mempool/offerTestData.json (339)
    A core/src/test/resources/bisq/core/provider/mempool/txInfo.json (351)
    M desktop/src/main/java/bisq/desktop/main/offer/takeoffer/TakeOfferDataModel.java (22)
    M desktop/src/main/java/bisq/desktop/main/offer/takeoffer/TakeOfferView.java (43)

-- Patch Links --

https://github.com/bisq-network/bisq/pull/5160.patch
https://github.com/bisq-network/bisq/pull/5160.diff

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