Implement Requirement SCH2000

[ArielSAdamsNASA]

Checklist (Please check before submitting)

• I reviewed the Contributing Guide.
• I performed a cursory search to see if the bug report is relevant, not redundant, nor in conflict with other tickets.

Is your feature request related to a problem? Please describe.
Requirement SCH2000 is not implemented.

Describe the solution you'd like
Upon receipt of a Major Frame Signal, SCH shall start processing the Scheduler Definition Table (SDT) which contains the defined activities.

Additional context
The SCH Timing Test Scenario document from JIRA states: Still need to figure out how to control the major frame signal. Waiting to hear back from Alan Cudmore.

Reporter Info
Ariel Adams, MCSG Tech