Add gradle lint

[Tejas2805]

We can add a gradle lint to check unused dependencies and deprecated packages and update them accordingly.

PR #1095 was based on this

[Tejas2805]

@fzdy1914 @eugenepeh If you both think having a gradle lint is a good idea, I can try out more useful rules and apply them accordingly. Or I will just stick with PR #1095 Let me know your thoughts on it.

[eugenepeh]

Hmm, if its a one-time thing then its better not to integrate it into the repo as it is also a plugin itself that may somewhat affect the build time. We can however, leave it as an active PR to help us detect misuse from time to time.

[fzdy1914]

@Tejas2805, I accidentally mess up this PR, can you help fix it?