Update for Doxygen 1.9.5 (#119) ...

* Update for Doxygen 1.9.5

* Also update doxygen version in docs.yaml

* Also fix Doxygen version in basic_checks.yaml

Fix all Doxygen errors and make any future errors fatal (#118) ...

* Start working on fixing doxygen warnings

* Upgrade doxyfile to Doxygen 1.9.1

* Clean up some unmatched groups and add some exclusions

* Fix docs for rtos::ThisThread not showing up

* Fix up KV store docs

* Fix incorrect @files, some more incorrect groups

* Fix lots of broken links

* Start fixing mbedtls groups

* Fix more mbedtls docs

* Fix remaining mbedtls files with missing or incorrect grouping

* Fix a huge amount of PSA docs errors

* Fix a few more mbedtls docs errors

* Fix __cplusplus not defined for docs, clean up call in callback typedef, fix some docs errors

* Fix some broken doc links in HAL headers

* Fix more PSA doc errors

* Fix some doxygen errors in networking code

* Fix lots of network related doc errors

* Try and fix some CI failures

* Use Doxygen Action instead of doxygen in Mbed container to get the right version

* Try removing docs check

* Add first part of doxygen action

* Add next part of doxygen action

* Fix yaml syntax error

* Add in license check fix

* Try using verbose scancode

* Fix some more docs issues, workaround scancode-toolkit#3179

* Clean up the LoRaRadio get_state() function on each implementation.  Also fix some other compile and doc errors.

* Fix all remaining doxygen errors

* Fix escaping, for realsies this time

* Remove Doxygen unsupported config options, fix some more get_status() declarations

* Fix some UNITTESTS build errors

* Fix one more compile error

* Another unittest error

Clean up group/module definitions in doxygen (#97) ...

* Clean up group definitions in doxygen

* remove THIRD_PARTY_DOCS

* some stragglers

* fix astyle formatting

Lots of usability improvements for the I2C API. Better docs and new top-level functions. (#64) ...

* Lots of usability improvements for the I2C API.  Better docs and new top-level functions.

* Document frequencies

* Tabs to spaces

* More style fixes

* Run astyle

* Clean up docs

* Add note about addressing, change 10 bit to 11 bit

* Fix spellcheck

* Fix paste error

* Oops, fix accidental change

Add docs generation workflow (#45) ...

* Add docs generation workflow

* remove extraneous backslash

BLE: update doxygen exclusion pattern

Update mbedtls paths

Fixing UNITTESTS

Update lwipstack paths

Update astyleignore and source code comment

Update paths to cellular framework

psa: Remove S-mode only code ...

Remove all PSA S-mode only code, as it is unused. Only PSA S targets
would use the code, and we've removed those targets in a previous
commit.

Ensure all tests for S-mode code we are deleting is also removed, even
if that code would run in NS-mode. Keep any tests that also test our PSA
emulation support (for single v7-M targets).

Signed-off-by: Jaeden Amero <jaeden.amero@arm.com>

psa: Remove MBED_SPM code ...

All MBED_SPM targets have been removed previously, via commits
5cc66282ddc6 ("PSOC6: remove PSA targets") and 115b09aba43b ("psoc6:
Remove FUTURE_SEQUANA and FUTURE_SEQUANA_M0"). Remove all the dead
MBED_SPM code, as no targets use it.

Signed-off-by: Jaeden Amero <jaeden.amero@arm.com>

Doxygen: don't extract static members

Add RESET_REASON and WATCHDOG to doxygen options

Remove FEATURE_STORAGE and all underlying deprecated features

Doxygen add TF-M flags

put macros in to enabled all ble modules for doxygen

Cellular: Remove non-API folders from Doxygen

Fix PSA-SPM Documentation

Add a formal HAL specification for the MPU API ...

Add a formal HAL specification consisting of:
-defined and undefined behavior
-test descriptions
-enable doxygen for MPU

Merge branch 'doxy_refactor' of https://github.com/jamesbeyond/mbed-os into dev_rollup

Fix missing doxygen pages ...

Set the doxygen option HIDE_UNDOC_CLASSES to NO so even classes
without top level documentation show up. This fixes missing class links
in the documentation.

This problem was introduced when the local doxygen settings were
synchronized with the website doxygen settings:
784fa91
"Update doxygens to be in sync"

exclude vendor's EMAC driver from doxy

Doxygen: Hide friend declarations in dox.

Update doxygens to be in sync ...

Make the following changes to doxyfile_options:
-Change CASE_SENSE_NAMES so names of files generated match mbed-os docs
-Change DISABLE_INDEX so navigation bar shows
-Change CLASS_DIAGRAMS so inheritance diagram gets generated
-Change USE_MDFILE_AS_MAINPAGE and add DOXYGEN_FRONTPAGE.md to
    FILE_PATTERNS so the correct main page is found and used
-Remove DEVICE_ETH from PREDEFINED since this is no longer relevent
-Change GENERATE_XML and XML_OUTPUT so no xml is generated
-Change SEARCHENGINE to match the docs

Make the following changes in doxygen_options.json:
-Add all non-default values in doxyfile_options to the json
-Break json into 3 groups
    1. Values that are the same as doxyfile_options
    2. Values that must be different from doxyfile_options
    3. Values the are overriden by the docs builder
-Make the doxyegn search directory "INPUT" start in mbed-os rather
    than one level above mbed-os.

Finally, rename the BLE doxygen front page so it is not confused with
the mbed-os front page.

Allow storage doxy to build

Exclude components from Doxygen

Merge pull request #7819 from lorjala/unittests ...

Unit testing framework

Add unit testing framework