keyboard grammar does not hold a series of modifier keys

[LexiconCode]

Describe the bug
Keyboard command with the hold/release modifier for a series keypresses is not recognized is not a valid command.
The modifier key combos are not included in the button_dictionary_1. Some thought will have to begin how to include them whether it's in button_dictionary_1or something else.

To Reproduce
Steps to reproduce the behavior (be sure to include the exact command phrase you are using):
Test case 1

1. Start the test engine
2. Say 'hold control shift'
3. command not recognized

Test case 2

1. Say 'control shift'
2. command recognized

Expected behavior
hold modifiers should work as expected

There are issues modifying command as the following:

        "<hold_release> (<modifier> | <button_dictionary_1>)":
              R(Key("%(modifier)s | %(button_dictionary_1)s:%(hold_release)s"),
              rdescript="%(hold_release)s button: %(button_dictionary_1)s"),             

• modifier choice objects to be valid keypresses would need the character - removed
• Duplicate single modifier keys between button_dictionary_1 and modifier
• Passing the correct keys to rdescript with optional (<modifier> | <button_dictionary_1>) choice objects

---

IssueHunt Summary

lexiconcode has been rewarded.

Backers (Total: $100.00)

• itsrainingschmen ($100.00)

Submitted pull Requests

• #879 Commands for hold multiple modifier keys one utterance

---

Tips

• Checkout the Issuehunt explorer to discover more funded issues.
• Need some help from other developers? Add your repositories on IssueHunt to raise funds.

[issuehunt-oss]

@itsrainingschmen has funded $100.00 to this issue.

---

• Submit pull request via IssueHunt to receive this reward.
• Want to contribute? Chip in to this issue via IssueHunt.
• Checkout the IssueHunt Issue Explorer to see more funded issues.
• Need help from developers? Add your repository on IssueHunt to raise funds.

[issuehunt-oss]

@lexiconcode has rewarded $90.00 to @lexiconcode. See it on IssueHunt

• 💰 Total deposit: $100.00
• 🎉 Repository reward(0%): $0.00
• 🔧 Service fee(10%): $10.00