Add autopatch to add schema to toml files

autopatches/patches/add-schemas/patch.sh

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+#!/usr/bin/env bash
+
+MANIFEST_SCHEMA_LINE='#:schema https://raw.githubusercontent.com/YunoHost/apps/master/schemas/manifest.v2.schema.json'
+TESTS_SCHEMA_LINE='#:schema https://raw.githubusercontent.com/YunoHost/apps/master/schemas/tests.v1.schema.json'
+
+
+if [ -f "manifest.toml" ]; then
+    if ! grep "#:schema" "manifest.toml" >/dev/null; then
+        sed -i "1 s|^|$MANIFEST_SCHEMA_LINE\n|" manifest.toml
+    fi
+fi
+
+if [ -f "tests.toml" ]; then
+    if ! grep "#:schema" "tests.toml" >/dev/null; then
+        sed -i "1 s|^|$TESTS_SCHEMA_LINE\n|" tests.toml
+    fi
+fi
+
+git add manifest.toml tests.toml

autopatches/patches/add-schemas/pr_body.md

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+
+This is an ***automated*** patch to add the TOML schemas URLs to manifest.toml and tests.toml.
+
+This allows to check for the validity of your TOML files.
+
+Multiple tools can be used to validate files against their schema:
+
+* `taplo`, a command line tool: `taplo lint manifest.toml`
+* IDEs like VScode have plugins to automagically validate files

autopatches/patches/add-schemas/pr_title.md

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+Add TOML schemas URLs