chore: Rename Projects to Templates (#880)

Customer feedback indicated projects was a confusing name.
After querying the team internally, it seemed unanimous
that it is indeed a confusing name.

Here's for a lil less confusion @ashmeer7 🥂

coderd/database/queries/templates.sql

@@ -0,0 +1,68 @@
+-- name: GetTemplateByID :one
+SELECT
+	*
+FROM
+	templates
+WHERE
+	id = $1
+LIMIT
+	1;
+
+-- name: GetTemplatesByIDs :many
+SELECT
+	*
+FROM
+	templates
+WHERE
+	id = ANY(@ids :: uuid [ ]);
+
+-- name: GetTemplateByOrganizationAndName :one
+SELECT
+	*
+FROM
+	templates
+WHERE
+	organization_id = @organization_id
+	AND deleted = @deleted
+	AND LOWER("name") = LOWER(@name)
+LIMIT
+	1;
+
+-- name: GetTemplatesByOrganization :many
+SELECT
+	*
+FROM
+	templates
+WHERE
+	organization_id = $1
+	AND deleted = $2;
+
+-- name: InsertTemplate :one
+INSERT INTO
+	templates (
+		id,
+		created_at,
+		updated_at,
+		organization_id,
+		"name",
+		provisioner,
+		active_version_id
+	)
+VALUES
+	($1, $2, $3, $4, $5, $6, $7) RETURNING *;
+
+-- name: UpdateTemplateActiveVersionByID :exec
+UPDATE
+	templates
+SET
+	active_version_id = $2
+WHERE
+	id = $1;
+
+-- name: UpdateTemplateDeletedByID :exec
+UPDATE
+	templates
+SET
+	deleted = $2
+WHERE
+	id = $1;