chore: add aibridge data to telemetry (#20449)

- Adds a new table to keep track of which payloads have already been
reported since we only report for the last clock hour
- Adds a query to gather and aggregate all the data by
provider/model/client

Relates to https://github.com/coder/coder-telemetry-server/issues/27

coderd/database/dump.sql

@@ -2012,6 +2012,18 @@ CREATE TABLE telemetry_items (
     updated_at timestamp with time zone DEFAULT now() NOT NULL
 );
 
+CREATE TABLE telemetry_locks (
+    event_type text NOT NULL,
+    period_ending_at timestamp with time zone NOT NULL,
+    CONSTRAINT telemetry_lock_event_type_constraint CHECK ((event_type = 'aibridge_interceptions_summary'::text))
+);
+
+COMMENT ON TABLE telemetry_locks IS 'Telemetry lock tracking table for deduplication of heartbeat events across replicas.';
+
+COMMENT ON COLUMN telemetry_locks.event_type IS 'The type of event that was sent.';
+
+COMMENT ON COLUMN telemetry_locks.period_ending_at IS 'The heartbeat period end timestamp.';
+
 CREATE TABLE template_usage_stats (
     start_time timestamp with time zone NOT NULL,
     end_time timestamp with time zone NOT NULL,
@@ -3090,6 +3102,9 @@ ALTER TABLE ONLY tasks
 ALTER TABLE ONLY telemetry_items
     ADD CONSTRAINT telemetry_items_pkey PRIMARY KEY (key);
 
+ALTER TABLE ONLY telemetry_locks
+    ADD CONSTRAINT telemetry_locks_pkey PRIMARY KEY (event_type, period_ending_at);
+
 ALTER TABLE ONLY template_usage_stats
     ADD CONSTRAINT template_usage_stats_pkey PRIMARY KEY (start_time, template_id, user_id);
 
@@ -3315,6 +3330,8 @@ CREATE INDEX idx_tailnet_tunnels_dst_id ON tailnet_tunnels USING hash (dst_id);
 
 CREATE INDEX idx_tailnet_tunnels_src_id ON tailnet_tunnels USING hash (src_id);
 
+CREATE INDEX idx_telemetry_locks_period_ending_at ON telemetry_locks USING btree (period_ending_at);
+
 CREATE UNIQUE INDEX idx_template_version_presets_default ON template_version_presets USING btree (template_version_id) WHERE (is_default = true);
 
 CREATE INDEX idx_template_versions_has_ai_task ON template_versions USING btree (has_ai_task);