chore: track terraform modules in telemetry (#15450)

Addresses https://github.com/coder/nexus/issues/35.

This PR:

- Adds a `workspace_modules` table to track modules used by the
Terraform provisioner in provisioner jobs.
- Adds a `module_path` column to the `workspace_resources` table,
allowing to identify which module a resource originates from.
- Starts pushing this new information into telemetry.

For the person reviewing this PR, do not fret about the 1,500 new lines
- ~1,000 of them are auto-generated.

coderd/database/migrations/000276_workspace_modules.up.sql

@@ -0,0 +1,16 @@
+ALTER TABLE
+    workspace_resources
+ADD
+    COLUMN module_path TEXT;
+
+CREATE TABLE workspace_modules (
+    id uuid NOT NULL,
+    job_id uuid NOT NULL REFERENCES provisioner_jobs (id) ON DELETE CASCADE,
+    transition workspace_transition NOT NULL,
+    source TEXT NOT NULL,
+    version TEXT NOT NULL,
+    key TEXT NOT NULL,
+    created_at timestamp with time zone NOT NULL
+);
+
+CREATE INDEX workspace_modules_created_at_idx ON workspace_modules (created_at);