Add dependabot config

[akurtakov]

No description provided.

[akurtakov]

@HannesWell how to make licensecheck run in subdir?

[akurtakov]

I have reduced this one to dependabot only so there is at least some automation enabled while I look at it. @HannesWell I would appreciate if you spend the time to provide PR that enables licensecheck on this repo.

[HannesWell]

I have reduced this one to dependabot only so there is at least some automation enabled while I look at it. @HannesWell I would appreciate if you spend the time to provide PR that enables licensecheck on this repo.

I think this can addressed if I add a parameter to force another root pom file to the license-check build that is then used as value for the -f option and defaults to pom.xml. For this repo the value could then be set to lemminx-maven.

I will test and implement that (probably) this evening and will let you know if it's done.

[mickaelistria]

@HannesWell I think it's not worth bothering too much with it. #311 seems like a better approach.