[Untested] Remove lodash to reduce final size

[DeltaEvo]

The size of vue-apollo was very big with lodash functions so I tried to get rid of them and see the file size after removal

Before

104K    dist/vue-apollo.esm.js
32K     dist/vue-apollo.min.js
108K    dist/vue-apollo.umd.js

After

52K     dist/vue-apollo.esm.js
24K     dist/vue-apollo.min.js
52K     dist/vue-apollo.umd.js

So 25%, not bad 😂

I don't know if that break something, throttle and debounce options seems undocumented, so the only case of breaking change is when someone was using lodash throttle and debounce options (leading, trailing, maxWait)

Tell me what do you think of removing lodash functions, so I'll try to see if my changes work

[Akryum]

Thanks! 👍