Add `comments` `POST`, `PATCH`, and `DELETE` endpoints for players, matches, and tournaments

[hburn7]

We need endpoints for manipulating comments. Some simple POST, PATCH, and DELETE endpoints for adding, editing, and deleting new comments is appropriate.

Tasks:

• [ ] Tournament comments manipulation
  • [ ] POST /tournaments/{id}/comments
  • [ ] PATCH /tournaments/{id}/comments
  • [ ] DELETE /tournaments/{id}/comments
• [ ] Matches comments manipulation
  • [ ] POST /matches/{id}/comments
  • [ ] PATCH /matches/{id}/comments
  • [ ] DELETE /matches/{id}/comments
• [ ] Players comments manipulation
  • [ ] POST /matches/{id}/comments
  • [ ] PATCH /matches/{id}/comments
  • [ ] DELETE /matches/{id}/comments

Depends on #120

[myssto]

Updated to reflect our newer standards with resource oriented design