Add optional fields to denote radiation boost

[hknahal]

Implementation:

Based on discussions with MOHCCN Clinical Commitee and ARGO CMD Working Group, the following two new optional fields will be added to the Radiation schema:

Field Name	Description	Data Tier	Attributes	Type	Permissible Values
“radiation_boost”	A radiation boost is an extra radiation treatment targeted at the tumor bed, given after the regular sessions of radiation is complete (Reference NCIt: C137812). Indicate if this radiation treatment was a radiation boost.	Extended		TEXT	Yes, No
“reference_radiation_treatment_id”	If a radiation boost was given, indicate the 'submitter_treatment_id' of the primary radiation treatment the radiation boost treatment is linked to.	Extended	Required/Conditional Only required if 'radiation_boost' = 'Yes'	TEXT

Rationale:
Some cancers (eg. breast cancer) require a supplemental dose of radiation. This provides a way to denote this in the clinical submission.

[puneet-oicr]

Can't be added to Dictionary 1.16 due to a clinical dependency

[puneet-oicr]

Almost complete

[puneet-oicr]

Dependency on clinical expectations, QA changes to be tested. To be part of Dictionary 1.18

[Buwujiu]

Once the clinical cross file validation is ready, will deploy this too.