[IMP] l10n_ec: Add and fix tax group accounts to automate tax closing entry

- These new accounts are to automate the tax closing entry on 103 and 104 reports.
- The tax names of account 11050201 is changed to a better accounting standard name for the understanding of the accounting accounts to be configured in the tax groups, based on the name of the new account group created.
- Accounts payable and receivable are added for each of the tax groups, by company. It's not set in chart template property accounts, because they are different accounts for each tax group. For this reason, the accounts are set in load chart template method.
- Add irbpnr tax group account
- Add Exchange Outflows accounts and fix ec translation for exchange outflows account
- Filter companies with EC chart template set

Part-of: odoo/odoo#123205