Add clap and set up CLI options

.github/workflows/check.yml

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+name: Check
+
+on:
+  pull_request:
+    paths:
+      - src/**
+      - Cargo.lock
+      - Cargo.toml
+      - .github/workflows/check.yml
+  push:
+    branches:
+      - main
+    paths:
+      - src/**
+      - Cargo.lock
+      - Cargo.toml
+      - .github/workflows/check.yml
+
+# Fail on warnings
+env:
+  RUSTFLAGS: "-Dwarnings"
+
+jobs:
+  clippy:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v3
+      - run: cargo clippy
+
+  test:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v3
+      - run: cargo test

.github/workflows/release.yml

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+name: Release
+
+permissions:
+  pull-requests: write
+  contents: write
+
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  release:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+      - name: Install Rust toolchain
+        uses: dtolnay/rust-toolchain@stable
+      - name: Run release-plz
+        uses: MarcoIeni/[email protected]
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          CARGO_REGISTRY_TOKEN: ${{ secrets.CARGO_REGISTRY_TOKEN }}

.gitignore

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+/target

Cargo.toml

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+[package]
+name = "favicon-rover"
+version = "0.1.0"
+edition = "2021"
+description = "A web service and CLI tool to fetch the favicon of any website"
+keywords = ["favicon", "scraper", "icon"]
+repository = "https://github.com/stevent-team/favicon-rover"
+license = "MIT"
+authors = ["Benji Grant", "Ewan Breakey"]
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+clap = { version = "4.3.15", features = ["derive"] }