Provide MBED_RAM_SIZE define allowing greentea tests to compile

Add out-of-the-box upload support for LPC1768 (OpenOCD and MBED methods only)

Fix OpenOCD script dir detection on Linux

Merge in FindSTLINKTools fixes from mbed-cmake

Add default upload method configuration for each target, make greentea tests use cmake upload methods

Add license to python file

Response to comments

Add docs for new upload method

Update with new MBED install method

License header added to all new filed

Remove NXPPROG from provided upload methods (too specialized).

Adapt mbed-cmake's automatic uploading and debugging system

Fix dockerfile typo

Move CI build requirements to their own file so CMake doesn't get confused about them. They weren't really needed anyway for the CMake build.

Fix missing requirements

Fix requirements.txt path in docker stuff

Remove the legacy Mbed CLI 1 tools!

MUSCA_S1 does not actually implement TRNG

Provide MBED_RAM_SIZE symbol for MUSCA_S1

Add more missed test skips

Fix some tests that weren't being skipped

Fix typo preventing unification test from running

Convert the rest of the hal tests, convert mbedtls to an OBJECT library

Fix a few more HAL tests

Enable reset_reason HAL test

Enable running host tests in Github Actions

Fix PSA and MUSCA build

- Split mbed-core and mbed-rtos into -sources and -flags targets ...

- Fix some logic errors in top level cmakelists related to building greentea tests
- Fix mbed_create_distro() for OBJECT libraries

Clean up top-level build file and build options, fix build issues on MinGW

Write defines into a disk file instead of passing 100s of them on the command line directly. Fixes some issues with build commands on my machine, and makes it a lot easier to view the make VERBOSE=1 output.