Add a new template to show the list of host functions (#7158)

* Add a new template to show the list of host functions

* Fix release notes template for host functions

---------

Co-authored-by: parity-processbot <>

polkadot/scripts/ci/changelog/templates/host_functions-list.md.tera

@@ -0,0 +1,12 @@
+{%- import "change.md.tera" as m_c -%}
+
+{% for pr in changes | sort(attribute="merged_at") -%}
+
+{%- if pr.meta.B and pr.meta.B.B0 -%}
+{#- We skip silent ones -#}
+{%- else -%}
+    {%- if pr.meta.E and pr.meta.E.E3 -%}
+- {{ m_c::change(c=pr) }}
+    {% endif -%}
+{% endif -%}
+{%- endfor -%}

polkadot/scripts/ci/changelog/templates/host_functions.md.tera

@@ -1,4 +1,5 @@
 {%- import "change.md.tera" as m_c -%}
+
 {%- set_global host_fn_count = 0 -%}
 {%- set_global upgrade_first = 0 -%}
 
@@ -32,10 +33,12 @@
 ## Host functions
 
 {% if host_fn_count == 0 %}
-ℹ️ This release does not contain any new host functions.
+ℹ️ This release does not contain any change related to host functions.
 {% elif host_fn_count == 1 -%}
 {# ---- #}
-ℹ️ The runtimes in this release contain one new **host function**.
+ℹ️ The runtimes in this release contain one change related to **host function**s:
+{% include "host_functions-list.md.tera" -%}
 {%- else -%}
-ℹ️ The runtimes in this release contain {{ host_fn_count }} new **host function{{ host_fn_count | pluralize }}**.
+ℹ️ The runtimes in this release contain {{ host_fn_count }} changes related to **host function**s:
+{% include "host_functions-list.md.tera" -%}
 {%- endif %}