[Backend] Create database tables for adherence report

Description

1. Create a database table named project_compliance_standards_adherence

classDiagram
  class project_compliance_standards_adherence
    project_compliance_standards_adherence : +int id
    project_compliance_standards_adherence : +timestamp created_at
    project_compliance_standards_adherence : +timestamp updated_at
    project_compliance_standards_adherence : +int project_id
    project_compliance_standards_adherence : +int namespace_id
    project_compliance_standards_adherence : +Enum check_name
    project_compliance_standards_adherence : +Enum status
    project_compliance_standards_adherence : +Enum standard

2. Create an index for unique columns project_id, check_name, standard.