docs: initial gitbook docs (#336)

docs/plugins/notarized_locations.md

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+The Ktor Locations API is an experimental API that allows users to add increased type safety to their defined routes.
+
+You can read more about it [here](https://ktor.io/docs/locations.html).
+
+Kompendium supports Locations through an ancillary module `kompendium-locations`
+
+## Adding the Artifact
+
+Prior to documenting your locations, you will need to add the artifact to your gradle build file.
+
+```kotlin
+dependencies {
+  implementation("io.bkbn:kompendium-locations:latest.release")
+}
+```
+
+## Installing Plugin
+
+Once you have installed the dependency, you can install the plugin. The `NotarizedLocations` plugin is an _application_
+level plugin, and **must** be install after both the `NotarizedApplication` plugin and the Ktor `Locations` plugin.
+
+```kotlin
+private fun Application.mainModule() {
+  install(Locations)
+  install(NotarizedApplication()) {
+    spec = baseSpec
+  }
+  install(NotarizedLocations()) {
+    locations = mapOf(
+      Listing::class to NotarizedLocations.LocationMetadata(
+        parameters = listOf(
+          Parameter(
+            name = "name",
+            `in` = Parameter.Location.path,
+            schema = TypeDefinition.STRING
+          ),
+          Parameter(
+            name = "page",
+            `in` = Parameter.Location.path,
+            schema = TypeDefinition.INT
+          )
+        ),
+        get = GetInfo.builder {
+          summary("Get user by id")
+          description("A very neat endpoint!")
+          response {
+            responseCode(HttpStatusCode.OK)
+            responseType<ExampleResponse>()
+            description("Will return whether or not the user is real 😱")
+          }
+        }
+      ),
+    )
+  }
+}
+```
+
+Here, the `locations` property is a map of `KClass<*>` to metadata describing that locations metadata. This
+metadata is functionally identical to how a standard `NotarizedRoute` is defined.
+
+> ⚠️ If you try to map a class that is not annotated with the ktor `@Location` annotation, you will get a runtime
+> exception!