build: automate release flow

Adds a GitHub Action to perform the following:

- Kick off whenever a new commit is made on the default (main) branch
- Bump package version in `package.json`
  - Version bump follows semantic versioning
  - Avoid automatically publishing new major versions to prevent unintended releases
- Publish updated package to registry (npmjs.com)
- Add a new git tag
- Generate release notes and add them to the changelog
- Publish a new release to GitHub, includes change notes in release body

.releaserc.json

@@ -0,0 +1,136 @@
+{
+    "branches": [
+      "main"
+    ],
+    "tagFormat": "${version}",
+    "plugins": [
+      [
+        "@semantic-release/commit-analyzer",
+        {
+          "releaseRules": [
+            {
+              "breaking": true,
+              "release": "minor"
+            },
+            {
+              "type": "feat",
+              "release": "minor"
+            },
+            {
+              "type": "fix",
+              "release": "patch"
+            },
+            {
+              "type": "docs",
+              "release": "patch"
+            },
+            {
+              "type": "perf",
+              "release": "patch"
+            },
+            {
+              "type": "refactor",
+              "release": "patch"
+            },
+            {
+              "type": "style",
+              "release": "patch"
+            },
+            {
+              "type": "test",
+              "release": "patch"
+            },
+            {
+              "type": "build",
+              "release": "patch"
+            },
+            {
+              "type": "ci",
+              "release": "patch"
+            },
+            {
+              "type": "chore",
+              "scope": "deps",
+              "release": "patch"
+            }
+          ]
+        }
+      ],
+      [
+        "@semantic-release/release-notes-generator",
+        {
+          "preset": "conventionalcommits",
+          "writerOpts": {
+            "types": [
+              {
+                "type": "feat",
+                "section": "Features"
+              },
+              {
+                "type": "fix",
+                "section": "Bug Fixes"
+              },
+              {
+                "type": "docs",
+                "section": "Documentation",
+                "hidden": false
+              },
+              {
+                "type": "deps",
+                "section": "Dependency Updates",
+                "hidden": false
+              },
+              {
+                "type": "chore",
+                "hidden": true
+              },
+              {
+                "type": "style",
+                "hidden": true
+              },
+              {
+                "type": "refactor",
+                "hidden": true
+              },
+              {
+                "type": "perf",
+                "hidden": true
+              },
+              {
+                "type": "test",
+                "hidden": true
+              }
+            ]
+          }
+        }
+      ],
+      [
+        "@semantic-release/changelog",
+        {
+          "changelogFile": "CHANGELOG.md",
+          "changelogTitle": "# Changelog"
+        }
+      ],
+      [
+        "@semantic-release/npm",
+        {
+          "pkgRoot": "."
+        }
+      ],
+      [
+        "@semantic-release/git",
+        {
+          "assets": [
+            "bundles/**",
+            "esm2015/**",
+            "fesm2015/**",
+            "lib/**",
+            "package.json",
+            "CHANGELOG.md"
+          ],
+          "message": "chore(release): ${nextRelease.version}\n\n${nextRelease.notes} [skip ci]"
+        }
+      ],
+      "@semantic-release/github"
+    ]
+  }