Add Alma API Client

Why these changes are being introduced:
Application needs to communicate with Alma via Acquistions API

How this addresses that need:
* Adds alma module with AlmaClient class, including methods to retrieve
  the necessary data for Invoice processing and mark processed invoices paid.
* Adds tests and fixtures to reflect changes.

Relevant ticket(s):
* https://mitlibraries.atlassian.net/browse/IN-731

Pipfile

@@ -17,6 +17,8 @@ mypy = "*"
 pylama = {extras = ["all"], version = "*"}
 pytest = "*"
 pydocstyle = "*"
+requests-mock = "*"
+types-requests = "*"
 
 [requires]
 python_version = "3.11"

README.md

@@ -14,7 +14,7 @@ sets trasmitted invoice to paid in Alma
 ## Required ENV
 - `ALMA_API_URL` = Base URL for making Alma API calls
 - `ALMA_API_READ_WRITE_KEY` = API key for making Alma API calls
-- `SAP_DROPBOX_CONNECTION` = JSON formatted connection information for accessing SAP dropbox
+- `SAP_DROPBOX_CLOUDCONNECTOR_JSON` = JSON formatted connection information for accessing SAP dropbox
 - `SAP_REPLY_TO_EMAIL` = reply-to email on emails to SAP recipient email lists
 - `SAP_FINAL_RECIPIENT_EMAIL` = moira list to recieves final run emails
 - `SAP_REVIEW_RECIPIENT_EMAIL` = moira list to recieve review run emails
@@ -23,5 +23,6 @@ sets trasmitted invoice to paid in Alma
 - `WORKSPACE` = Set to `dev` for local development, this will be set to `stage` and `prod` in those environments by Terraform.
 
 ## Optional ENV
-- `LOG_LEVEL` = Optional, set to a valid Python logging level (e.g. DEBUG, case-insensitive) if desired. Can also be passed as an option directly to the ccslips command. Defaults to INFO if not set or passed to the command.
+- `ALMA_API_TIMEOUT`= Request timeout for Alma API calls. Defaults to 30 seconds if not set. 
+- `LOG_LEVEL` = Set to a valid Python logging level (e.g. DEBUG, case-insensitive) if desired. Can also be passed as an option directly to the ccslips command. Defaults to INFO if not set or passed to the command.
 - `SENTRY_DSN` = If set to a valid Sentry DSN, enables Sentry exception monitoring. This is not needed for local development.