Adds actions to support LdmlKeyboardEditor, and refactors and
reorganizes the existing actions along the way to make them clearer.

Compile, Install, and Uninstall supported at this time

Because the debugger actions are used only with the kmn keyboard editor,
it makes sense to keep them as a separate module, in preparation for
supporting XmlLdmlKeyboards.

Adds XmlLdml keyboard editor form based on the plain text Editor for
now.

ActiveEditor is a name used for multiple purposes. Rename to
ActiveKmnKeyboardEditor and introduce ActiveLdmlKeyboardEditor
alongside.

Removes old state load/save from each project file type, and the
unused WarnAsError property, in preparation for xmlLdmlProjectFile.

Relates to #9948.

Fixes #9869.

Adds a 'Description' field, tweaks Copyright strings, and tweaks
default content for documentation to the New Project wizards and
kmconvert.

Relates to #9948. Starts basic support for v2.0 projects.

For all operating modes:

- Remove blank projects / untitled projects mode
- Add Open Project Folder buttons and links
- Remove Project Save As
- Render uses in-memory XML
- Upgrade to v2.0 project file (along with checks)

For v2.0 projects:

- Remove 'Add File to Project'
- Populate Files to list all files in folder (note: consider efficiency
  here as currently files are parsed for subfile data)
- Version 2.0 project options and defaults

Fixes #9923.

These are no longer used because we now use kmc for builds. This also
means that the kmcomp-x64-structures test is no longer required, because
that was used to keep the Delphi and C++ structures in sync.

There are some minor details around error message identifiers that are
still present in a handful of places, but they are work for another
time.

fix(developer): enable line breaks in debugger

Merge pull request #9922 from keymanapp/fix/developer/7851-restore-selection-to-same-key-in-layout-builder

fix(developer): restore selection in layout builder even with duplicate ids

fix(developer): warn if layer switch key is missing ID

chore(developer): rename messages.ts for clarity

feat(developer): Compile button in TIKE toolbar

fix(developer): raise error if virtual key in context string

feat(developer): extract font family from .ttf in kmc-keyboard-info

Merge pull request #9914 from keymanapp/fix/developer/7852-layout-builder-maintain-presentation-during-undo

fix(developer): layout builder - maintain presentation during undo

fix(developer): enable and update unit tests

fix(developer): open editor links in new window

chore(developer): change field label to 'Related Package ID' in Related Packages dialog

chore(common): fixup SchemaValidators error handling

fix(developer): Project MRU now saves correctly

chore(developer): verify kmp.json output from kmc-package

fix(developer): debug flag for compiling keyboards

fix(developer): compiler crash when no project loaded

Merge branch 'fix/developer/9889-compiler-crash-without-project' into fix/developer/9885-debug-flag-not-working-in-tike

fix(web): fixes doc-kbd display of default layer when it's not defined first

Fixes #7851.

Note that this fixes the selection pop issue with duplicate ids in some
scenarios but not all. For example, the undo stack doesn't have enough
detail at this point to be able to track this. This fix addresses the
most egregious issue relating to key size adjustment and similar.

Fixes #8000.

In earlier versions of KeymanWeb, it was assumed that layer switch keys
would not necessarily need an identifier, as they would not be
generating a standard KeymanWeb key event. However, this assumption does
not really hold, so we should be warning on missing identifiers for
layer switch keys.

Renames two messages.ts to kmn-compiler-messages.ts and
kmw-compiler-messages.ts, as otherwise confusion reigns.

Also a minor cleanup of the error messages from touch layout processing,
to clarify message names and return appropriate message for missing
layout file.

Fixes #7852.

When undo is run in the layout builder, it is better to keep the user's
selected presentation if possible. (The selected presentation is not
stored in the undo stack, but is a view property affected by the
currently selected platform.)

Fixes #7891.

Fixes #7880.

Virtual keys have never been allowed in context. This should be an error
in a keyboard. Note: virtual keys in output are officially unsupported
but still kinda sorta a little bit work in Windows -- but I doubt they
will ever be officially supported.

Also includes small side journey to tidy up names and constants for two
other tests (error_duplicate_group and error_duplicate_store).