[FEATURE] (FRONTEND) Markdown Based Proposals 🟠

[codingshot]

Problem

• Need rich text formatting for proposals

Description

• Add markdown support in proposal text idetor and on proposal feed

User Story(s):

As a _______, I want to ____, so that I can

Acceptance Criteria

Limitations

Resources

• [DESIGN] My Proposal Feed #7 [DESIGN] Create Proposal 🟠 #5