TDBStore: call `BlockDevice::erase()` regarless of erase value ...

From the documentations of `BlockDevice::get_erase_value()`:

    -1 if you can't rely on the value of the erased storage

and `BlockDevice::program()`:

    The blocks must have been erased prior to being programmed

So, `BlockDevice::erase()` should always be called regardless of
erase value.

TDBStore: optimize erase algorithms ...

Currently `TDBStore::offset_in_erase_unit()` and
`TDBStore::check_erase_before_write()` loop through erase units
one-by-one, until the entire range is covered. This is very inefficient
when the erase size is tiny, e.g. one-byte on a non-flash device for
which we use program as erase.

This commit reworks the algorithms, based on the fact that a block
device can erase or program as many units as needed in one go.

FileSystemStore unit test: remove erased_set_get test ...

The "erased_set_get" test case deinits `FileSystemStore`, erases the
block device, and reinits `FileSystemStore`. This of course fails,
because `BlockDevice::erase()` removes all stored data including the
format of the `FileSystem` (middle layer), unless the particular type
of block device has a no-op erase implementation.

Note: Previously `HeapBlockDevice::erase()` was essentially a no-op
so this test case did not fail. We recently added the freeing of heap
memory and it uncovered the problem.

Remove: ARM_MUSCA_A1 support ...

ARM_MUSCA_A1 is not supported since Mbed OS 6.0
Refer: https://github.com/ARMmbed/mbed-os/pull/13165

Therefore remove files from kv_config and TF-M post binary hook script.

Merge pull request #14031 from arduino/blockdevices_namespaces ...

BlockDevices: specify mbed namespace where needed

CMake: rename greentea test macro

fix namespaces for MBED_NO_GLOBAL_USING_DIRECTIVE feature ...

added namespaces in various files

Merge pull request #14063 from dustin-crossman/pr/wifi_reserved_region ...

Support arbitrary storage alongside WiFi firmware in external storage on Cypress targets

Merge pull request #14088 from hugueskamba/hk_cmake_greentea_kvstore ...

CMake: Add support for KVstore Greentea tests

CMake: Add support for KVstore Greentea tests ...

The KVstore Greentea tests can now be built with CMake

CMake: Add Blockdevice dependency to KVstore library ...

As KVstore relies on BlockDevice add the dependency
in Mbed OS so applications do not have to specify it

CMake: streamline kvstore support ...

Link KVStore dependency in Mbed OS so application projects do not have to.

Create non-public target for Cypress boards with externally-stored WiFi firmware ...

Targets that inherit from this target will have the defines necessary to
place the WiFi firmware in external storage and enable use of the
external WiFi firmware reserved region block device.
Currently, the only target inheriting from this new target is
CY8CPROTO-062S3-4343W.

KVStore general_tests_phase_1/2: flash simulation no longer required

TDBStore Doxygen: flash characteristics no longer required

TDBStore whitebox test: flash simulation no longer required

SecureStore whitebox test: flash simulation no longer required

TDBStore unit test: flash simulation no longer required

kv_config: TDBStore doesn't require flash simulation anymore

"kvstore_global_api" requires "kvstore" for backward compatibility ...

PR #13908 replaces the umbrella library for all KVStore from
"kvstore_global_api" to "kvstore". Now "kvstore_global_api"
still exists but is restricted to the global API part only.

By adding "kvstore" as a dependency of "kvstore_global_api",
existing bare metal projects (e.g. mbed-bootloader) that use
the latter library name to pull in the KVStore prototype class
will continue to work.

KVStore: drop './' from CMake paths

Fix astyle in KVStore unit tests

KVStore: componentize CMake definitions into sub-components

Relocate kvstore Greentea tests into each store type's path

Relocate kvstore unit tests into each store type's path

Update UNITTEST for kvstore

Update include paths

Create a kvstore_global_api for the global API and KVMap

Turn TDBStore and FileSystemStore into standalone libraries

Bring in TDBStore UNITTESTS improvements from PR #13731 ...

Co-authored-by: Seppo Takalo <seppo.takalo@arm.com>