Issue #3391240: Provide default config with the module

config/install/filter.format.markdown.yml

+langcode: en
+status: true
+dependencies:
+  module:
+    - filter
+    - markdown_easy
+name: Markdown
+format: markdown
+weight: 0
+filters:
+  filter_autop:
+    id: filter_autop
+    provider: filter
+    status: true
+    weight: -45
+    settings: {  }
+  filter_html:
+    id: filter_html
+    provider: filter
+    status: true
+    weight: -49
+    settings:
+      allowed_html: "<a href hreflang> <em> <strong> <cite> <blockquote cite> <code> <ul type> <ol start type='1 A I'> <li> <dl> <dt> <dd> <h2 id='jump-*'> <h3 id> <h4 id> <h5 id> <h6 id>"
+      filter_html_help: true
+      filter_html_nofollow: false
+  markdown_easy:
+    id: markdown_easy
+    provider: markdown_easy
+    status: true
+    weight: -50
+    settings:
+      flavor: standard
+      tips: ''