Projects - submit solution API

[alaminsahed]

Frontend: #113

• Create a mutation (POST API) called submitSolution to submit the solution

Table solution:

• id (1, 2...)
• solutionMaskId (WSPMGveFxM)
• title
• repositoryUrl
• liveUrl
• questions
• createdAt
• updatedAt

Related Table tag:

• id
• tagMaskId
• title
• createdAt
• updatedAt

Mapping table solutionTag:

• id
• solutionId
• tagId
• createdAt
• updatedAt

Sample Migration SQL:

CREATE TABLE tag (
  id SERIAL PRIMARY KEY,
  tagMaskId VARCHAR(30) NOT NULL,
  title VARCHAR(255) NOT NULL,
  createdAt DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
  updatedAt DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP
);