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Standardize stm32 gpio driver error returns#1448

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UncleGrumpy wants to merge 2 commits intoatomvm:mainfrom
UncleGrumpy:align-gpio-drivers
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Standardize stm32 gpio driver error returns#1448
UncleGrumpy wants to merge 2 commits intoatomvm:mainfrom
UncleGrumpy:align-gpio-drivers

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@UncleGrumpy
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Standardizes stm32 gpio driver error returns. Nif functions raise Error, port functions return {error, Reason} on errors.

Handle atom creation more safely, see issue #1442

With #1408 this closes issue #894

These changes are made under both the "Apache 2.0" and the "GNU Lesser General
Public License 2.1 or later" license terms (dual license).

SPDX-License-Identifier: Apache-2.0 OR LGPL-2.1-or-later

Standardizes stm32 gpio driver error returns. Nif functions raise `Error`, port functions return
`{error, Reason}` on errors.

Addresses some concerns raised in issue atomvm#1442.

With atomvm#1408 this closes issue atomvm#894

Signed-off-by: Winford <winford@object.stream>
Introduces platform_defaultatoms.{c,h,def} for the stm32 platform and handles the creation of atoms
in a safer way.

See issue atomvm#1442

Signed-off-by: Winford <winford@object.stream>
@UncleGrumpy
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Closed because we migrated stm32 to a new codebase.

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