Adds "report snippet" class allowing re-usable report snippets to be uploaded

InvenTree/report/migrations/0006_reportsnippet.py

@@ -0,0 +1,27 @@
+# Generated by Django 3.0.7 on 2021-02-03 05:57
+
+import django.core.validators
+from django.db import migrations, models
+import report.models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('report', '0005_auto_20210119_0815'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='ReportSnippet',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('name', models.CharField(help_text='Template name', max_length=100, unique=True, verbose_name='Name')),
+                ('template', models.FileField(help_text='Report template file', upload_to=report.models.rename_template, validators=[django.core.validators.FileExtensionValidator(allowed_extensions=['html', 'htm', 'tex'])], verbose_name='Template')),
+                ('description', models.CharField(help_text='Report template description', max_length=250, verbose_name='Description')),
+            ],
+            options={
+                'abstract': False,
+            },
+        ),
+    ]