meta_payroll_type — US:PTO — distinguish between Earned and Taken

Metadata `payroll-type` will go on `Liabilities:Payable:Vacation` and
`Expenses:Payroll:Salary`, but we need to distinguish as to whether
the Payroll was earned or taken.

Later,  `Liabilities:Payable:Vacation` should require a
`payroll-type` metadata of either `US:PTO:Taken` or `US:PTO:Earned`,
and the `CA:` equivalents.

conservancy_beancount/plugin/meta_payroll_type.py

@@ -75,7 +75,8 @@ class SalaryHook(_PayrollTypeHook):
         'US:MA:Disability:PML',
         'US:NY:Disability',
         'US:NY:Disability:PFL',
-        'US:PTO',
+        'US:PTO:Earned',
+        'US:PTO:Taken',
         *_tax_values,
     ], {
         value.replace(':Tax:', ':Taxes:', 1): value

tests/test_meta_payroll_type.py

@@ -42,7 +42,8 @@ HOOK_DATA = [
         'US:Taxes:Medicare',
         'CA:General',
         'US:403b:Match',
-        'US:PTO',
+        'US:PTO:Earned',
+        'US:PTO:Taken',
     ),
     HookData.from_hook(meta_payroll_type.TaxHook,
                        'CA:PP', 'US:IL:Unemployment', 'US:SocialSecurity'),