feat(lpe): add discretionary reason

[blaggacao]

Context

• LP may be earned on discretionary terms implemented in a servers script outside of the calculation of the loyalty program

• Eg Referral bonus on third party sales

• Communication / Notification may need to be distinguishable as per the reason

Solution

• Mark mandatory fields as such
• Add reason field to capture nuances for messaging

[blaggacao]

Fears are nothing more than a state of mind. - Napoleon Hill

---

_{Kindly help move this PR forward. Many thanks from Yours Sincerely!}

[blaggacao]

What the caterpillar calls the end of the world, the master calls a butterfly. - Richard Bach

---

_{Kindly help move this PR forward. Many thanks from Yours Sincerely!}

[blaggacao]

Watch your thoughts, they become your words Watch your words, they become your actions Watch your actions, they become your habits Watch your habits, they become your character Watch your character, it becomes your destiny. -

---

_{Kindly help move this PR forward. Many thanks from Yours Sincerely!}