Migrate to monorepo and pnpm (#163)

DXJ-85

packages/fluence-interfaces/.gitignore

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+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+lerna-debug.log*
+
+# Compiled binary addons (https://nodejs.org/api/addons.html)
+build/Release
+bundle/
+
+dist
+esm
+types
+
+# Dependency directories
+node_modules/
+jspm_packages/
+
+.idea

packages/fluence-interfaces/.npmignore

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+.idea
+.gitignore
+node_modules
+types
+
+src/
+
+tsconfig.json
+webpack.config.js
+
+bundle
+pkg

packages/fluence-interfaces/.prettierrc.js

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+module.exports = {
+  semi: true,
+  trailingComma: "all",
+  singleQuote: true,
+  printWidth: 120,
+  tabWidth: 4,
+  useTabs: false
+};

packages/fluence-interfaces/CONTRIBUTING.md

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+## Contribute Code
+
+You are welcome to contribute to Fluence.
+
+Things you need to know:
+
+1.  You need to **agree to the Contributors License Agreement**. This is a common practice in all major Open Source projects. At the current moment we are unable to accept contributions made on behalf of a company. Only individual contributions will be accepted.
+2.  **Not all proposed contributions can be accepted**. Some features may e.g. just fit a third-party add-on better. The contribution must fit the overall direction of Fluence and really improve it. The more effort you invest, the better you should clarify in advance whether the contribution fits: the best way would be to just open an issue to discuss the contribution you plan to make.
+
+### Contributor License Agreement
+
+When you contribute, you have to be aware that your contribution is covered by **Apache License 2.0**, but might relicensed under few other software licenses mentioned in the **Contributor License Agreement**.
+In particular you need to agree to the [Contributor License Agreement](https://gist.github.com/fluencelabs-org/3f4cbb3cc14c1c0fb9ad99d8f7316ed7). If you agree to its content, you simply have to click on the link posted by the CLA assistant as a comment to the pull request. Click it to check the CLA, then accept it on the following screen if you agree to it. CLA assistant will save this decision for upcoming contributions and will notify you if there is any change to the CLA in the meantime.

packages/fluence-interfaces/README.md

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+# FluenceJS interfaces
+
+This package is a part of FluenceJS, the official implementation of the Fluence Peer in typescript. See the [FluenceJS repo](https://github.com/fluencelabs/fluence-js) for more info
+
+## Contributing
+
+While the project is still in the early stages of development, you are welcome to track progress and contribute. As the project is undergoing rapid changes, interested contributors should contact the team before embarking on larger pieces of work. All contributors should consult with and agree to our [basic contributing rules](CONTRIBUTING.md).
+
+## License
+
+[Apache 2.0](LICENSE)

packages/fluence-interfaces/package.json

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+{
+    "name": "@fluencelabs/interfaces",
+    "version": "0.1.0",
+    "description": "Fluence interfaces",
+    "main": "./dist/index.js",
+    "typings": "./dist/index.d.ts",
+    "engines": {
+        "node": ">=10",
+        "pnpm": ">=3"
+    },
+    "scripts": {
+        "build": "tsc"
+    },
+    "repository": "https://github.com/fluencelabs/fluence-js",
+    "author": "Fluence Labs",
+    "license": "Apache-2.0",
+    "dependencies": {},
+    "devDependencies": {
+        "typescript": "^4.6.4"
+    }
+}

packages/fluence-interfaces/src/index.ts

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+/*
+ * Copyright 2020 Fluence Labs Limited
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+export type PeerIdB58 = string;
+
+export type ParticleHandler = (particle: string) => void;
+
+/**
+ * Base class for connectivity layer to Fluence Network
+ */
+export abstract class FluenceConnection {
+    abstract readonly relayPeerId: PeerIdB58 | null;
+    abstract connect(onIncomingParticle: ParticleHandler): Promise<void>;
+    abstract disconnect(): Promise<void>;
+    abstract sendParticle(nextPeerIds: PeerIdB58[], particle: string): Promise<void>;
+}

packages/fluence-interfaces/tsconfig.json

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+{
+    "compilerOptions": {
+        "outDir": "./dist/",
+        "lib": ["ES2015"],
+        "target": "ES5",
+        "module": "commonjs",
+        "skipLibCheck": true,
+        "sourceMap": true,
+        "declaration": true,
+        "esModuleInterop": true,
+   },
+    "exclude": ["node_modules", "dist"],
+    "include": ["src/**/*"]
+}