chore: upgrade momento sdk - consistency, less copypasta (#150)

This change establishes a common pattern for interacting with the
service. Rather than copy/pasting matches, MomentoError -> CliError
mapping and json dump code around, this names those functionalities
as functions:
* interact_with_momento: Completes a momento future and maps the
  result to a Result< HappyCaseType, CliError >
* print_whatever_this_is_as_json: prints whatever you feed it as json
* drop windows lint, linux lint is enough
* also choco install protoc in a windows build near you. Relates to tokio-rs/prost#620

This change was precipitated by the change in the SDK to simplify
and coalesce client creation behind the SimpleCacheClientBuilder and
triggered by the SDK upgrade.

There are small changes to debug and error messages, but this change
should cause no functional changes.

tired of copypasta.
```
pub async fn delete_cache(cache_name: String, auth_token: String) -> Result<(), CliError> {
    debug!("deleting cache...");
    let mut momento = get_momento_client(auth_token).await?;
    match momento.delete_cache(&cache_name).await {
        Ok(_) => (),
        Err(e) => return Err(CliError { msg: e.to_string() }),
    };
    Ok(())
}
```
becomes
```
pub async fn delete_cache(cache_name: String, auth_token: String) -> Result<(), CliError> {
    let mut client = get_momento_client(auth_token).await?;
    interact_with_momento("deleting cache...", client.delete_cache(&cache_name)).await
}
```

.github/workflows/cd.yml

@@ -130,6 +130,8 @@ jobs:
     needs: release
     steps:
       - uses: actions/checkout@v2
+      - name: i guess windows-latest does not have protoc or cmake but we need protoc
+        run: choco install protoc
       - uses: actions-rs/toolchain@v1
         with:
           toolchain: stable

.github/workflows/ci.yml

@@ -23,16 +23,6 @@ jobs:
       - name: Rigorous lint via Clippy
         run: cargo clippy --all-targets --all-features -- -D warnings
 
-  rustfmt-windows:
-    name: Style & Lint - Windows
-    runs-on: windows-latest
-    steps:
-      - uses: actions/checkout@v2
-      - name: rustfmt
-        run: cargo fmt -- --check
-      - name: Rigorous lint via Clippy
-        run: cargo clippy --all-targets --all-features -- -D warnings
-
   build:
     runs-on: ubuntu-latest
     steps:
@@ -79,6 +69,8 @@ jobs:
     runs-on: windows-latest
     steps:
       - uses: actions/checkout@v2
+      - name: i guess windows-latest does not have protoc or cmake but we need protoc
+        run: choco install protoc
       - uses: actions-rs/toolchain@v1
         with:
           toolchain: stable