feat: do not depend on "constructs" (#36)

As much as it's romantic, it didn't add much value to this project.

Implement a simple decentralized synthesis model where "Component" has a "synthesize" method
that accepts an output directory and can emit files into that directory.

.projenrc.js

@@ -1,10 +1,8 @@
 const { JsiiProject, Semver } = require('./lib');
 
-const constructs = Semver.pinned('2.0.1');
-
 const project = new JsiiProject({
   name: 'projen',
-  jsiiVersion: Semver.caret('1.5.0'),
+  jsiiVersion: Semver.caret('1.9.0'),
   description: 'A new generation of project generators',
   repository: 'https://github.com/eladb/projen.git',
   authorName: 'Elad Ben-Israel',
@@ -14,20 +12,19 @@ const project = new JsiiProject({
     'yaml': Semver.caret('1.9.2'),
     'fs-extra': Semver.caret('9.0.1'),
     'yargs': Semver.caret('15.4.0'),
-    'constructs': constructs,
     'decamelize': Semver.caret('4.0.0')
   },
   devDependencies: {
     '@types/fs-extra': Semver.caret('8.0.1'),
     '@types/yargs': Semver.caret('15.0.5')
   },
-  peerDependencies: {
-    'constructs': constructs
-  },
   bundledDependencies: [
     'yaml', 'fs-extra', 'yargs', 'decamelize',
   ],
   projenDevDependency: false, // because I am projen
+  scripts: {
+    bootstrap: [ 'yarn install', 'yarn compile', 'yarn projen' ].join(' && ')
+  },
   workflowBootstrapSteps: [
     { run: `yarn bootstrap` }
   ],
@@ -36,9 +33,6 @@ const project = new JsiiProject({
   compileBeforeTest: true,
 });
 
-project.addScripts({
-  bootstrap: 'yarn install && yarn compile && yarn projen'
-});
 project.gitignore.comment('templates must live in the repo');
 project.gitignore.include('templates/**');