[DE DateTimeV2] missing frequently used expressions for "now"

[mujdricza]

Describe the bug
For the simple regex NowRegex, we miss some frequently used expressions:

• grade
• im Augenblick
• zur Zeit
• zurzeit

To Reproduce
Steps to reproduce the behavior:

1. Go to

   Recognizers-Text/Patterns/German/German-DateTime.yaml

   Line 377 in 8d2eeda

   NowRegex: !simpleRegex

2. and see that the mentioned phrases are not present

Expected behavior
The list should include frequently used phrases for "now".

Sample input/output
Current status:

NowRegex: !simpleRegex
  def: \b(?<now>(genau\s+)?jetzt|momentan|im moment|derzeit|in diesem moment|aktuelle?|gerade|so früh wie möglich|frühestmöglich|neulich|vorher)\b

Platform (please complete the following information):

• Platform: NET, Python
• Environment: LUIS
• Version of package: v1.8.8

Additional context
A possible solution:

NowRegex: !simpleRegex
  def: \b(?<now>(genau\s+)?jetzt|momentan|im moment|derzeit|in diesem moment|aktuelle?|ge?rade|so früh wie möglich|frühestmöglich|neulich|vorher|zur ?zeit|im augenblick)\b

Thank you.