STM32F1: add MCU_STM32F103xD and MCU_STM32F103xG support

[jeromecoutant]

Summary of changes

Goal: support custom boards in https://forums.mbed.com/t/success-with-armc6-failure-with-gcc-arm/18947

Build validated with ARMmbed/stm32customtargets@b065fe8

Impact of changes

Migration actions required

Documentation

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Pull request type

[x] Patch update (Bug fix / Target update / Docs update / Test update / Refactor)
[] 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

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Reviewers

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[jeromecoutant]

@0xc0170 Could you check the ACI license error....

[0xc0170]

@0xc0170 Could you check the ACI license error....

I'll do, another python package breakage? I'll create new pull request to investigate what has changed the last week.

[0xc0170]

Working on addressing the license breakage in #15357 (I sent PR upstream, 15357 PR will be opened for testing purposes. Once closed, the master should be green again).

[0xc0170]

@jeromecoutant Can you rebase you branch? The recent master should have license check fixed.

Pull request has been modified.

[jeromecoutant]

@jeromecoutant Can you rebase you branch? The recent master should have license check fixed.

Done, but still failing..

[0xc0170]

Thanks, another breakage? I'll check

[0xc0170]

Master branch fixed now, please rebase

[jeromecoutant]

Master branch fixed now, please rebase

done!

[0xc0170]

CI started

[mbed-ci]

Jenkins CI Test : ✔️ SUCCESS

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jobs	Status
jenkins-ci/mbed-os-ci_build-cloud-example-ARM	✔️
jenkins-ci/mbed-os-ci_build-cloud-example-GCC_ARM	✔️
jenkins-ci/mbed-os-ci_unittests	✔️
jenkins-ci/mbed-os-ci_build-greentea-ARM	✔️
jenkins-ci/mbed-os-ci_build-greentea-GCC_ARM	✔️
jenkins-ci/mbed-os-ci_build-example-ARM	✔️
jenkins-ci/mbed-os-ci_build-example-GCC_ARM	✔️
jenkins-ci/mbed-os-ci_greentea-test	✔️