feat(regexService): config define regex list/object

[pelord]

Please check if the PR fulfills these requirements

• The commit message follows our guidelines:https://github.com/infra-geo-ouverte/igo2/blob/master/.github/CONTRIBUTING.md#git-commit-guidelines
• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)

What is the current behavior? (You can also link to an open issue here)
new feature.

What is the new behavior?
In a config.json or environnement.ts.. you could define a config to control regexes from config... instead of coding them.

Does this PR introduce a breaking change? (check one with "x")

• Yes
• No

If this PR contains a breaking change, please describe the impact and migration path for existing applications:

Other information:

[pelord]

Example not used at this moment in the app.

  "regex": {
    "geoservice": [
      {
        "url": "http://youdomain/wmsService....",
        "type": "wms",
        "columnForLayerName": "layer"
      }
    ]
  }