Sequence Editor Ground epoch time tag

[goetzrrGit]

Closes #1368

A new time tag, 'G', to represent the ground epoch in the sequence

Reconfigured Ground Epoch: The ground epoch is now represented as a time tag 'G' to better match with existing time tags R1 A2020-001T00:00:00 E+00:10:00 C.

Autocompletion support: The 'G' time tag has been added to autocompletion suggestions.

Function refactoring: Time checking logic has been moved to a dedicated function
Linting support: Linting rules have been updated to support the 'G' time tag and ensure correct usage within 'Request' blocks.
SeqJson support: Both export and import functionality for SeqJson include the 'G' time tag, enabling seamless data exchange.
Unit test updates: Unit tests have been modified to cover the new 'G' time tag functionality.

Testing: Make sure you copy-paste this into the editor and export reimport the seqJson for round tripping

@ID "G Time Tag"

G-00:00:01 "epoch1" @REQUEST_BEGIN("request1")
  C FSW_CMD_0 "ON" false 1
@REQUEST_END

G+10 "epoch2" @REQUEST_BEGIN("request2")
  C FSW_CMD_0 "ON" false 1
@REQUEST_END

G002T00:01:00 "epoch3" @REQUEST_BEGIN("request3")
  C FSW_CMD_0 "ON" false 1
@REQUEST_END

C @REQUEST_BEGIN("request4")
  C FSW_CMD_0 "ON" false 1
@REQUEST_END

[duranb]

lgtm! pending @joswig's 👀 on the grammar

[joswig]

I'm good with the grammar change if @shaheerk94 concurs with the resulting language

The format differed because, I thought the name should go before the delta, I'll also add that the delta is unrestricted in the schema, but downstream tools aren't as flexible and I consider that a required schema update that shouldn't block this.

https://github.com/NASA-AMMOS/seq-json-schema/blob/fdad4b3af45906de9c02a3fb67817f1e399fde69/schema.json#L151

[joswig]

@shaheerk94 Would you confirm if this lines up with #1368 sufficiently

[shaheerk94]

New format will work - agree with Chet we may need to add more restrictions in the future but that doesn't have to block this merge.

[goetzrrGit]

@dandelany

Breaking Change:

Reworked the Ground Epoch Time for the request blocks to match existing time tags (R,E,A,C)

Old Format: @GROUND_EPOCH("Name", "+1.00") @REQUEST_BEGIN
New Format: G1 "Name" @REQUEST_BEGIN

This change breaks any sequence that relies on the old way to represent ground epoch times. You will need to change @GROUND_EPOCH annotation to a G time tag as shown above.