[Setup_CSO] Incomes

**Feature description: A user can select the types of income the CSO typically has.**
These values will be used when adding incomes and expenses to a balance sheet or when defining a Grant’s budget.

Flow:
1. Go to the sidebar menu > click on 'Profil Organizatie' > step 3 'Incomes'
2. A new page opens [Figma: Income types](https://www.figma.com/file/W7ppl5xGFpB3atVWwYL7qN/Alex-(asistentul-bugetar-al-ONG-urilor)?type=design&node-id=2486-38845&mode=design&t=79gQ43lP2Ho8QbII-4)
3. The user can select the type of income the CSO typically has in the two subsections: “Venituri cu contract” are Grants and “Venituri fara contract” are non-grant income sources.

**Actions on 'Income'**
1. Actionable buttons that can be selected for the 'Venituri cu contract' types of income
2. Actionable buttons that can be selected for the 'Venituri fara contract' types of income
- button states: unselected - highlight grey; selected - green & tickmark added before button label
3. Button: 'Pasul anterior' leads to the second step of the setup > 'Bank Accounts' described in issue https://github.com/code4romania/alex-api/issues/30
4. Button: 'Pasul urmator' leads to 'Expenses' described in issue https://github.com/code4romania/alex-api/issues/74