Allow upload method configs to specify an OpenOCD version range

[multiplemonomials]

Summary of changes

Quick update to the OpenOCD upload method to allow the configuration to specify a valid range of OpenOCD versions that will work.

Impact of changes

This will allow @ccli8 to make sure that Nuvoton upload methods only work with Nuvoton OpenOCD

Migration actions required

None

Documentation

Updated the upload method page: https://github.com/mbed-ce/mbed-os/wiki/Upload-Methods

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Pull request type

[] Patch update (Bug fix / Target update / Docs update / Test update / Refactor)
[X] Feature update (New feature / Functionality change / New API)
[] Major update (Breaking change E.g. Return code change / API behaviour change)

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Test results

[] No Tests required for this change (E.g docs only update)
[] Covered by existing mbed-os tests (Greentea or Unittest)
[X] Tests / results supplied as part of this PR

Verified that you now get an error if you use an OpenOCD version that doesn't satisfy the constraint

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[ccli8]

Verify version OK on Nuvoton forked OpenOCD