Improve boot performance

[anonrig]

I'm trying to reduce the boot time of Mali. There are lots of things to do, but most significant thing I've realized is that we need to remove lodash forOwn usage. Even changing it with a for(const el in obj) improves the performance a lot. This pull request creates a benchmark suite for addService and includes all the performance changes to reduce addService duration.

Initial

> mali@0.43.1 benchmark
> node test/benchmark.js

metadata.create x 725 ops/sec ±0.19% (95 runs sampled)
mali.addService x 12,350 ops/sec ±3.70% (89 runs sampled)
mali.use x 12,727 ops/sec ±1.75% (90 runs sampled)

Current

Platform info:
==============
   Darwin 20.5.0 arm64
   Node.JS: 16.2.0
   V8: 9.0.257.25-node.16
   Apple M1 × 8

Suite: Functions
✔ metadata.create                             747 rps
✔ mali.addService                          13,170 rps
✔ mali.use                                 13,259 rps
✔ mali.use as global middleware            13,559 rps

   metadata.create                     -94.49%            (747 rps)   (avg: 1ms)
   mali.addService                      -2.87%         (13,170 rps)   (avg: 75μs)
   mali.use                             -2.21%         (13,259 rps)   (avg: 75μs)
   mali.use as global middleware            0%         (13,559 rps)   (avg: 73μs)
-----------------------------------------------------------------------

[coveralls]

Coverage increased (+0.4%) to 97.76% when pulling 5acf678 on perf/addService into 3cd4000 on master.