feat: make cargo lint run linting CI workflow locally

Add the [`lints`] section to `Cargo.toml` and reinforce the same linting
options as the ones in the `format_and_lint` CI workflow. Also, add an
alias `cargo lint` for `cargo clippy --all-targets --all-features
--tests` to the `.cargo/config.toml` file.

The alias for `cargo fmt --all` ain't required yet since `patch-hub` is
a single crate project.

[Maintainer edits]
- Squash both commits into one
- Change commit message subject to fit "feat/fix/refactor" pattern
- Added comments to `Cargo.toml` and `.cargo/config.toml`

Signed-off-by: OJarrisonn <[email protected]>
Reviewed-by: David Tadokoro <[email protected]>
Signed-off-by: David Tadokoro <[email protected]>

Author: OJarrisonn

.cargo/config.toml

@@ -0,0 +1,3 @@
+# Alias for `cargo clippy`
+[alias]
+lint = "clippy --all-targets --all-features"

Cargo.toml

@@ -33,3 +33,12 @@ installers = []
 targets = ["x86_64-unknown-linux-gnu", "x86_64-unknown-linux-musl"]
 # Publish jobs to run in CI
 pr-run-mode = "plan"
+
+# Linter configurations
+[lints.rust]
+warnings = "deny"
+unconditional_recursion = "deny"
+
+[lints.clippy]
+too-many-arguments = "allow"
+map_unwrap_or = "deny"