Do I have a lawsuit if just recently the company I work for installed cameras in the employee breakroom?
No, you do not: an employer is allowed to videotape employees (e.g. install cameras) in any part of the office where there is no reasonable expectation of privacy: e.g. no cameras in restrooms, lockerrooms, a person's private office which has a door. But there is no expectation of privacy in a breakdown, since you are not (or shouldn't be!) in a state of undress and people can come in at any time. Therefore, they may put cameras there.
Cameras are not permitted in areas where workers have a "reasonable expectation of privacy (i.r. changing rooms, restrooms, etc.). In breakrooms, however, there is no such expectation therefore video recording is as a general rule permitted. That having been said, some states require notice of such a recording. Accordingly, you were informed of the cameras and keep working there, then your consent for such recording is implied.