[Feature:RainbowGrades] add withdrawn registration status (#84)

Outputs the registrations status (graded, withdrawn, audit) as an
additional column in the instructor output table.

also removes deprecated columns tracking the late days used & available
for the term.
(This is now available in the 'my late days & extensions' table.)

Co-authored-by: Barb Cutler <Barb Cutler>

[Dependency:System] update peter evans repository dispatch version (#79)

Co-authored-by: Barb Cutler <Barb Cutler>

[Dependency:System] update peter evans repository dispatch version (#79)

Co-authored-by: Barb Cutler <Barb Cutler>

[Refactor:RainbowGrades] Remove benchmark_percent from display (#76)

Matching behavior of Submitty Repo

[Refactor:RainbowGrades] Remove benchmark_percent from display (#76)

Matching behavior of Submitty Repo

[Bugfix:RainbowGrades] replace poll status with end_date (#72)

Submini polls now feature an option to use a timer to automatically
close/end the poll
Submitty/Submitty#10184

This PR updates the parsing of the output files from generate grade
summaries to handle both the old format ("status") and the new format
("end_date")

Note: The end_date does not currently contain a timestamp. This code may
need further revision if/when that is added.

---------

Co-authored-by: Barb Cutler <Barb Cutler>

[Refactor:RainbowGrades] remove explain table (#70)

It will remove a table with explanation
related to #69 
Barb hit merge 1 second before I remove above line

[Feature:RainbowGrades] Adds Legend to Instructor Gradebook (#67)

Certain gradeables have colored outlines to represent different
statuses. Currently, the instructor gradebook does not provide a legend
for these statuses. This PR adds that legend.

New Behavior:

![image](https://github.com/Submitty/RainbowGrades/assets/143554378/64a7eb05-9bbe-4557-b176-fc152db42c95)

closes [#9764](Submitty/Submitty#9674)

[Refactor:RainbowGrades] Edit Moss Default Value (#58)

The current mossify function assumes average_letter_grade to be greater
than 0.
moss_penalty += -average_letter_grade * penalty;
s->getMossPenalty() < -0.01 is the threshold to check if student has
moss penalty.
However, if value of average_letter_grade or penalty is 0, it does not
pass the threshold and does not catch the student when displaying the
black outline or adding @ to final grade.

Hence, quick fix made by increasing the default moss_penalty from
-0.0000001 -> -0.0000002

[Bugfix:Developer] Specify action version for release updates (#54)