feat: mautic: support self hosted instance

[anantjain45823]

Description of the change

We will be supporting self hosted instance of mautic through this and for the same reason username could be anything and not particularly email address so removed that as well.

Type of change

• Bug fix (non-breaking change that fixes an issue)
• New feature (non-breaking change that adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

Related issues

Fix #1

Checklists

Development

• Lint rules pass locally
• The code changed/added as part of this pull request has been covered with tests
• All tests related to the changed code pass in development

Code review

• This pull request has a descriptive title and information useful to a reviewer. There may be a screenshot or screencast attached
• "Ready for review" label attached to the PR and reviewers mentioned in a comment
• Changes have been reviewed by at least one other engineer
• Issue from task tracker has a link to this pull request

[ItsSudip]

Remove the package-lock.json changes.

[github-actions]

Coverage report

St.❔	Category	Percentage	Covered / Total
🟢	Statements	88% (+0% 🔼)	19629/22306
🟡	Branches	74.23% (+0.01% 🔼)	8360/11263
🟢	Functions	90.76% (+0% 🔼)	2211/2436
🟢	Lines	88.1% (+0% 🔼)	19465/22093

Show files with reduced coverage 🔻

St.❔	File	Statements	Branches	Functions	Lines
🟢	... / transform.js	97.67% (-0.05% 🔻)	88.1% (-0.54% 🔻)	100%	97.67% (-0.05% 🔻)

Test suite run success

2605 tests passing in 179 suites.

Report generated by 🧪jest coverage report action from 37ab44f