feat: add support for title option

[BrunnerLivio]

Description

conventional-changelog-angular offers an optional configuration in the header.hbs for titles.

This pull request exposes this option.

Motivation

I wanted to have custom auto-generated titles in my release-notes so they're more memorable. I wanted to use Moniker in order to generate a random word, like so:

const Moniker = require("moniker"); const title = Moniker.generator([Moniker.adjective, Moniker.noun], { glue: ' ' }).choose(); console.log('Creating release: ' + title); module.exports = { plugins: [ "@semantic-release/commit-analyzer", [ "@semantic-release/release-notes-generator", { preset: 'angular', title, }, ], ... ], };

... which results in:

# 1.2.0 (https://MY_DOMAIN.COM/compare/v1.1.0...v1.2.0) "barbarous flight" (2020-10-05) ### Bug Fixes * add release titles (2d47e7f (https://MY_DOMAIN.COM/commit/2d47e7f3d3ac322cd25f7f24f8c28b202b4ae6bc)) ### Features * a new release (ffb348b (https://MY_DOMAIN.COM/commit/ffb348bc362fc8f1a741df6cc849c3120fa5cefd))

[BrunnerLivio]

A workaround for this PR currently is by overwriting the default partial provided by whatever preset you are using. For example for Angular preset:

const Moniker = require("moniker"); const title = Moniker.generator([Moniker.adjective, Moniker.noun], { glue: ' ' }).choose(); module.exports = { plugins: [ "@semantic-release/commit-analyzer", [ "@semantic-release/release-notes-generator", { preset: 'angular', writerOpts: { headerPartial: `{{#if isPatch~}}  ## {{~else~}}  # {{~/if}} {{#if @root.linkCompare~}}  [{{version}}](  {{~#if @root.repository~}}  {{~#if @root.host}}  {{~@root.host}}/  {{~/if}}  {{~#if @root.owner}}  {{~@root.owner}}/  {{~/if}}  {{~@root.repository}}  {{~else}}  {{~@root.repoUrl}}  {{~/if~}}  /compare/{{previousTag}}...{{currentTag}}) {{~else}}  {{~version}} {{~/if}}  ${title} {{~#if date}} ({{date}}) {{/if}}` } }, ], ... ], };