Add `Work Experience` Form Section

[amlan-roy]

Is your feature request related to a problem? Please describe. Add the Work Experience section

Describe the solution you'd like Image:

AC:

• All the input fields should work.
• For the date field, "current"/end date are mutually exclusive (But optional).
  • If current/end date is selected, then start date is required.
• The big delete button on top deletes the whole section.
• The smaller delete button deletes the sub sections.
• The small plus below adds the sub section.

Are you willing to contribute to this issue? Yes

[amlan-roy]

Added the section. Tests remaining.

[amlan-roy]

Will create separate issue for tests for this component. Closing this issue.