Add geographies to the MP information output

**Is your feature request related to a problem? Please describe.**
It would be useful for users to see further geographic information on MPs, such as the LAs/LADs the MP is responsible for.

**Describe the solution you'd like**
This would be best done by increasing the amount of data kept from the MP lookup before it is joined onto the chosen postcode, such as LA name and Mayoral Combined Authority name where applicable.

**Describe alternatives you've considered**
An alternative could be that the user can select the geographic level they wish to search on (e.g. postcode, constituency, LA...) yet this would not exactly meet the requirements of a user who wants to see which LAs the MP overlaps with which they found from the postcode search.

**Additional context**
Consider reviewing the size of the new table when working on this change. It may be that the inclusion of geographic data means the user needs to rely on scrolling to see all the available information. You may consider transposing the table, or using other methods to present the information.