Expense Claim: Pay Provider Invoice

[blaggacao]

Is your feature request related to a problem? Please describe.

1. Buying manager goes to market
2. Pays e.g. vegetables out of pocket
3. Scans the receipt -> Expense Claim
4. Inventory receives vegetables (Purchase Receipt)

Describe the solution you'd like

1. Configure a particular Expense Claim Type as a convertible into Advance Payment on Purchase Invoice
2. On such Expense Claim Type: make adding original supplier optionally possible
3. Add backend action to create Invoice from claim (with attachment selector)
4. Apply claim as advance payment on invoice

Describe the alternatives you've considered

Debiting a payable account is not possible as the Claim Type account are filtered by Account Type 'Expense'.

Additional context

@ruchamahabal please provide some bits of guidance on an implementation strategy. I need this by next week, so I'll get to work right away. Would be great to have your input.

PS: vegetables here represent a non-expense inventory item.

[blaggacao]

I think that's what "Deferred expense account" check mark is for