pyocd additional settings

[flit]

This PR updates the pyocd launch config to support modern features of pyocd.

• Connect mode: pre-reset, under reset, halt (the default), attach.
• Reset type: target default, hw, various sw.
• Replace flash CRC check (fast verify) setting with smart flash option.
• Display the default target type for the selected probe/board.
• List targets in the default target type field and target type combo box as "vendor > {family >}* part-number (target)".

Some settings from the startup tab that don't make sense for pyocd are removed:

• First reset enable and type.
• Redundant semihosting enable.

Plus some improvements:

• pyocd's project directory is set to the Eclipse project location.
• Improved tool tip text.
• Fixed possible race between setting probe/target list fields and updating the corresponding UI elements.
• Some code cleanup.

Note: this PR includes the change in #470. I was planning to rebase this PR after the other is merged, but if you prefer we can close #470 and just use this one.

[ilg-ul]

I don't know what would be the best strategy for merging your code, personally I would accept it, but the Eclipse Foundation procedures, which are a bit more strict, might require a review.

Jonah, please advice.

[flit]

No problem, let's just see what Jonah says and I'll be happy to do anything required.

[jonahgraham]

This falls under the 1000 LOC for non-committers limit, and has passed ECA checks, so looks good to me.

BTW I did this to check size of contribution:

$ git diff HEAD origin/develop --shortstat 
 10 files changed, 265 insertions(+), 386 deletions(-)

where HEAD is the head commit of this change.

[ilg-ul]

Chris, please rebase your PR and as soon as it passes the CI checks it'll be merged.

[ilg-ul]

And, Chris, I would also appreciate an estimate when the pyocd plug-ins will be ready for the next release, since we also have to do some maintenance and it would be better to have the repo stable and frozen.

[flit]

Ready to go.

You can consider the pyocd plugins frozen for this release. Now I'm back from holiday, I need to focus on my research projects for a while anyway.

[ilg-ul]

Thank you!

[flit]

Thank you! 😄