Merge #398

398: add the categories and keywords r=Dylan-DPC a=kinggoesgaming

**I'm submitting a(n)** other

# Description
Add the categories and keywords in the `Cargo.toml`

# Motivation
Complete Documentation -> C-METADATA requirement

# Tests
N/A

# Related Issue(s)
#191 -> (C-METADATA)


Co-authored-by: Hunar Roop Kahlon <hunar.roop@gmail.com>

Cargo.toml

@@ -5,6 +5,12 @@ authors = [
     "Dylan DPC<dylan.dpc@gmail.com>",
     "Hunar Roop Kahlon<hunar.roop@gmail.com>"
 ]
+categories = [
+    "data-structures",
+    "no-std",
+    "parser-implementations",
+    "wasm"
+]
 description = "A library to generate and parse UUIDs."
 documentation = "https://docs.rs/uuid"
 edition = "2018"
@@ -14,6 +20,11 @@ exclude = [
     "appveyor.yml",
     "bors.toml"
 ]
+keywords = [
+    "guid",
+    "unique",
+    "uuid"
+]
 license = "Apache-2.0 OR MIT"
 homepage = "https://github.com/uuid-rs/uuid"
 name = "uuid"