+pnpm.io (#77)

* add pnpm of pnpm.io
* move pnpm to its own folder
* copy artifacts to dist
* test dir
* copy brew install strategy
* add install prefix
* try different install process
* retry add prefix
* set PNPM_HOME var
* add path
* test run export path only
* rm mkdir
* provide cjs files pnpm.io
* install node_modules
* add npmjs.com dep
* install on prefix path
* test cp install
* test uncertainly strip version
* provide fixed version
* fixed version in url
* undo versions fixed
* no proper pnpx test
* pnpx is actually deprecated: use undefined
      ERR_PNPM_RECURSIVE_EXEC_FIRST_FAIL  Cannot read property 'includes' of undefined or
* cleanup setup and dependency
* test if working correctly
* rm unused line

projects/pnpm.io/package.yml

@@ -0,0 +1,21 @@
+distributable:
+  url: https://registry.npmjs.org/pnpm/-/pnpm-{{version}}.tgz
+  strip-components: 1
+
+versions:
+  github: pnpm/pnpm
+
+provides:
+  - bin/pnpm
+
+dependencies:
+  nodejs.org: '>=16'
+
+build:
+  script: |
+    cp bin/pnpm.cjs bin/pnpm
+    cp -r . {{prefix}}
+
+test:
+  script: |
+    pnpm doctor