res_pjsip_endpoint_identifier_ip: Endpoint identifier request URI

Add ability to match against PJSIP request URI.

UserNote: this new feature let users match endpoints based on the
indound SIP requests' URI. To do so, add 'request_uri' to the
endpoint's 'identify_by' option. The 'match_request_uri' option of
the identify can be an exact match for the entire request uri, or a
regular expression (between slashes). It's quite similar to the
header identifer.

Fixes: #599

contrib/ast-db-manage/config/versions/cf150a175fd3_add_match_request_uri_attribute_to_.py

@@ -0,0 +1,20 @@
+"""add match_request_uri attribute to identify
+
+Revision ID: cf150a175fd3
+Revises: 8fce8496f03e
+Create Date: 2024-03-28 14:19:15.033869
+
+"""
+
+# revision identifiers, used by Alembic.
+revision = 'cf150a175fd3'
+down_revision = '8fce8496f03e'
+
+from alembic import op
+import sqlalchemy as sa
+
+def upgrade():
+    op.add_column('ps_endpoint_id_ips', sa.Column('match_request_uri', sa.String(255)))
+
+def downgrade():
+    op.drop_column('ps_endpoint_id_ips', 'match_request_uri')