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/dbgen/dbgen.go

@@ -657,11 +657,29 @@ func WorkspaceResource(t testing.TB, db database.Store, orig database.WorkspaceR
 			Valid:  takeFirst(orig.InstanceType.Valid, false),
 		},
 		DailyCost: takeFirst(orig.DailyCost, 0),
+		ModulePath: sql.NullString{
+			String: takeFirst(orig.ModulePath.String, ""),
+			Valid:  takeFirst(orig.ModulePath.Valid, true),
+		},
 	})
 	require.NoError(t, err, "insert resource")
 	return resource
 }
 
+func WorkspaceModule(t testing.TB, db database.Store, orig database.WorkspaceModule) database.WorkspaceModule {
+	module, err := db.InsertWorkspaceModule(genCtx, database.InsertWorkspaceModuleParams{
+		ID:         takeFirst(orig.ID, uuid.New()),
+		JobID:      takeFirst(orig.JobID, uuid.New()),
+		Transition: takeFirst(orig.Transition, database.WorkspaceTransitionStart),
+		Source:     takeFirst(orig.Source, "test-source"),
+		Version:    takeFirst(orig.Version, "v1.0.0"),
+		Key:        takeFirst(orig.Key, "test-key"),
+		CreatedAt:  takeFirst(orig.CreatedAt, dbtime.Now()),
+	})
+	require.NoError(t, err, "insert workspace module")
+	return module
+}
+
 func WorkspaceResourceMetadatums(t testing.TB, db database.Store, seed database.WorkspaceResourceMetadatum) []database.WorkspaceResourceMetadatum {
 	meta, err := db.InsertWorkspaceResourceMetadata(genCtx, database.InsertWorkspaceResourceMetadataParams{
 		WorkspaceResourceID: takeFirst(seed.WorkspaceResourceID, uuid.New()),