refactor(core): start process in production env

[faustbrian]

Set NODE_ENV to production as many npm packages determine the current environment and optimize their code for production.

What kind of change does this PR introduce?

• Bugfix
• Feature
• Refactor
• Performance
• Tests
• Build
• Documentation
• Code style update
• Continuous Integration
• Other, please describe:

Does this PR introduce a breaking change?

• Yes
• No

Does this PR release a new version?

• Yes
• No

If yes, please describe the impact and migration path for existing applications:

The PR fulfills these requirements:

• It's submitted to the develop branch, not the master branch
• All tests are passing
• New/updated tests are included

If adding a new feature, the PR's description includes:

• A convincing reason for adding this feature (to avoid wasting your time, it's best to open a suggestion issue first and wait for approval before working on it)

[codecov-io]

Codecov Report

Merging #2689 into develop will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           develop   #2689   +/-   ##
=======================================
  Coverage     64.6%   64.6%           
=======================================
  Files          362     362           
  Lines         8178    8178           
  Branches       413     376   -37     
=======================================
  Hits          5283    5283           
- Misses        2857    2861    +4     
+ Partials        38      34    -4

Impacted Files	Coverage Δ
packages/core/src/shared/start.ts	0% <ø> (ø)	⬆️
packages/core-api/src/handlers/utils.ts	77.27% <0%> (ø)	⬆️
packages/core-logger-winston/src/formatter.ts	41.66% <0%> (ø)	⬆️
...es/core-blockchain/src/replay/replay-blockchain.ts	0% <0%> (ø)	⬆️

---

Continue to review full report at Codecov.

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Δ = absolute <relative> (impact), ø = not affected, ? = missing data
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[codecov-io]

Codecov Report

Merging #2689 into develop will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           develop   #2689   +/-   ##
=======================================
  Coverage     64.6%   64.6%           
=======================================
  Files          362     362           
  Lines         8178    8178           
  Branches       413     376   -37     
=======================================
  Hits          5283    5283           
- Misses        2857    2861    +4     
+ Partials        38      34    -4

Impacted Files	Coverage Δ
packages/core/src/shared/start.ts	0% <ø> (ø)	⬆️
packages/core-api/src/handlers/utils.ts	77.27% <0%> (ø)	⬆️
packages/core-logger-winston/src/formatter.ts	41.66% <0%> (ø)	⬆️
...es/core-blockchain/src/replay/replay-blockchain.ts	0% <0%> (ø)	⬆️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 8be1248...b000911. Read the comment docs.