chore: use npm7 workspaces instead of lerna bootstrap

It's much faster!  npm@7 is required so people will need to upgrade
if they are running node 14.  Node 15 comes with npm@7 so all good
there.

```
npm7

real	2m30.996s
user	8m11.495s
sys	0m48.380sit

lerna

real	4m19.727s
user	4m36.371s
sys	0m51.310s
```

.github/workflows/bundlesize.yml

@@ -20,12 +20,13 @@ jobs:
           - packages/ipfs-message-port-client
     steps:
       - uses: actions/checkout@v2
-      - name: Use Node.js ${{ matrix.node-version }}
-        uses: actions/setup-node@v1
+      - uses: actions/setup-node@v2
         with:
-          node-version: ${{ matrix.node-version }}
-      - uses: actions/checkout@v2
-      - run: npm install -g @mapbox/node-pre-gyp && npm install
+          node-version: 15
+      - run: node --version
+      - run: npm --version
+      - name: Install dependencies
+        run: npm install -g @mapbox/node-pre-gyp && npm install
       - name: Bundlesize ${{ matrix.project }}
         uses: ipfs/aegir/actions/bundle-size@v32.1.0
         with:

.github/workflows/typecheck.yml

@@ -9,7 +9,6 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        node-version: [14.x]
         project:
           - packages/ipfs
           - packages/ipfs-cli
@@ -28,16 +27,14 @@ jobs:
           - packages/ipfs-message-port-server
     steps:
       - uses: actions/checkout@v2
-      - name: Use Node.js ${{ matrix.node-version }}
-        uses: actions/setup-node@v1
+      - uses: actions/setup-node@v2
         with:
-          node-version: ${{ matrix.node-version }}
+          node-version: 15
+      - run: node --version
+      - run: npm --version
       - name: Install dependencies
-        run: npm install
-      - name: Build types
-        run: npm run build
+        run: npm install -g @mapbox/node-pre-gyp && npm install
       - name: Typecheck ${{ matrix.project }}
         uses: gozala/typescript-error-reporter-action@v1.0.8
         with:
           project: ${{ matrix.project }}
-

.gitignore

@@ -4,6 +4,7 @@ logs
 npm-debug.log*
 package-lock.json
 yarn.lock
+tsconfig-types.aegir.json
 
 # Coverage directory used by tools like istanbul
 coverage