add rpc router section to SIP-26 #277

	name: Validate SIP

	on:
	pull_request:
	paths:
	- "SIPS/**"

	jobs:
	validate:
	name: Validate SIPs
	runs-on: ubuntu-latest
	defaults:
	run:
	working-directory: ./tools/validate
	steps:
	- uses: actions/checkout@v2
	with:
	fetch-depth: 0
	- name: Setup Node.js
	uses: actions/setup-node@v2
	with:
	node-version-file: "./tools/validate/.nvmrc"
	- name: Get Yarn version
	run: echo "::set-output name=YARN_VERSION::$(yarn --version)"
	id: yarn-version
	- name: Cache yarn dependencies
	uses: actions/cache@v2
	with:
	path: tools/validate/.yarn/cache
	key: yarn-cache-validate-${{ steps.yarn-version.outputs.YARN_VERSION }}-${{ hashFiles('tools/validate/yarn.lock') }}
	- run: yarn install --immutable
	- run: yarn build
	- name: Validate all SIPs
	run: yarn lint
	env:
	GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
	GITHUB_PULL_REQUEST: ${{ github.event.pull_request.number }}
	GITHUB_SHA_PULL_REQUEST: ${{ github.event.pull_request.head.sha }}
	FORCE_COLOR: 3

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