feat(profiling): Add has_profiles flag (#37488)

This flag will be used to track if a project has received its first profile.

migrations_lockfile.txt

@@ -6,5 +6,5 @@ To resolve this, rebase against latest master and regenerate your migration. Thi
 will then be regenerated, and you should be able to merge without conflicts.
 
 nodestore: 0002_nodestore_no_dictfield
-sentry: 0311_backfill_slack_settings
+sentry: 0312_has_profiles_flag
 social_auth: 0001_initial

src/sentry/migrations/0312_has_profiles_flag.py

@@ -0,0 +1,48 @@
+# Generated by Django 2.2.28 on 2022-08-04 21:06
+
+from django.db import migrations
+
+import bitfield.models
+from sentry.new_migrations.migrations import CheckedMigration
+
+
+class Migration(CheckedMigration):
+    # This flag is used to mark that a migration shouldn't be automatically run in production. For
+    # the most part, this should only be used for operations where it's safe to run the migration
+    # after your code has deployed. So this should not be used for most operations that alter the
+    # schema of a table.
+    # Here are some things that make sense to mark as dangerous:
+    # - Large data migrations. Typically we want these to be run manually by ops so that they can
+    #   be monitored and not block the deploy for a long period of time while they run.
+    # - Adding indexes to large tables. Since this can take a long time, we'd generally prefer to
+    #   have ops run this and not block the deploy. Note that while adding an index is a schema
+    #   change, it's completely safe to run the operation after the code has deployed.
+    is_dangerous = False
+
+    # This flag is used to decide whether to run this migration in a transaction or not. Generally
+    # we don't want to run in a transaction here, since for long running operations like data
+    # back-fills this results in us locking an increasing number of rows until we finally commit.
+    atomic = False
+
+    dependencies = [
+        ("sentry", "0311_backfill_slack_settings"),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name="project",
+            name="flags",
+            field=bitfield.models.BitField(
+                (
+                    ("has_releases", "This Project has sent release data"),
+                    ("has_issue_alerts_targeting", "This Project has issue alerts targeting"),
+                    ("has_transactions", "This Project has sent transactions"),
+                    ("has_alert_filters", "This Project has filters"),
+                    ("has_sessions", "This Project has sessions"),
+                    ("has_profiles", "This Project has sent profiles"),
+                ),
+                default=10,
+                null=True,
+            ),
+        ),
+    ]

src/sentry/models/project.py

@@ -134,6 +134,7 @@ class Project(Model, PendingDeletionMixin):
             ("has_transactions", "This Project has sent transactions"),
             ("has_alert_filters", "This Project has filters"),
             ("has_sessions", "This Project has sessions"),
+            ("has_profiles", "This Project has sent profiles"),
         ),
         default=10,
         null=True,