Added database for project comment templates

What does this MR do and why?

Adds new database table for project comment templates

Migration up

main: == [advisory_lock_connection] object_id: 120820, pg_backend_pid: 51498
main: == 20240325115147 CreateProjectSavedRepliesTable: migrating ===================
main: -- create_table(:project_saved_replies)
main: -- quote_column_name(:name)
main:    -> 0.0000s
main: -- quote_column_name(:content)
main:    -> 0.0000s
main:    -> 0.0134s
main: == 20240325115147 CreateProjectSavedRepliesTable: migrated (0.0328s) ==========

main: == [advisory_lock_connection] object_id: 120820, pg_backend_pid: 51498

Migration down

main: == [advisory_lock_connection] object_id: 120820, pg_backend_pid: 50911
main: == 20240325115147 CreateProjectSavedRepliesTable: reverting ===================
main: -- drop_table(:project_saved_replies)
main:    -> 0.0046s
main: == 20240325115147 CreateProjectSavedRepliesTable: reverted (0.0095s) ==========

main: == [advisory_lock_connection] object_id: 120820, pg_backend_pid: 50911

#440818 (closed)

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