Open-aea

AEA:
- Fixes the module import issue on the `aea test` command by removing the usage of spawned process to run the pytest command

Plugins:
- Pins proper version for cosmos plugin on the ledger plugin
- Updates the `LedgerApi.update_with_gas_estimation` method to raise instead of logging the error if specified by the user

Chores:
- Pins `pywin32` to `>=304`

AEA:
- Adds checks to make sure the author name and the package name are in snake case only
- Adds tools for automating the protocol tests
- Updates the test command to spawn a process for running the pytest command to make sure there are no issues with the test coverage
- Fixes a race condition found in the `AsyncMultiplexer`

Plugins:
- Makes the fetchai ledger plugin dependent on the cosmos plugin to prevent code duplication

Tests:
- Adds a test to showcase a race condition in `AsyncMultiplexer`

AEA:
- Adds auto-generated protobuf `*_pb2.py` and `*_pb2_*.py` files to `coveragerc` ignore template for aea test command.
- Fixes comparison operators ` __eq__`, `__ne__`, `__lt__`, `__le__`, `__gt__`, `__ge__` for multiple classes including `PackageVersion`.
- Adds support to `test packages` command for the `--all` flag and switches default behaviour to only run tests on `dev` packages.
- Fixes miscellaneous issues on base test classes and adds consistency checks via meta classes.

Plugins:
- Updates `open-aea-cli-ipfs` to retry in case an IPFS download fails

Tests:
- Fills coverage gaps on core `aea`
- Fills coverage gaps on multiple packages
- Fills coverage gaps on all plugins

Chores:
- Merges the coverage checks with unit tests and removes the extra test coverage CI run.
- Cleans up release flow.
- Adds workflow for image building.

AEA:
- Adds support for hashing byte strings on `IPFSHashOnly` tool
- Introduces `CliTest` tool to help with the `CLI` testing
- Extends aea packages lock command to update fingerprints
- Adds support for appending test coverage with previous runs on `aea test` command and fixes the coverage on `aea test packages` command
- Updates the `BasePackageManager.add_package` to fetch packages recursively

Plugins:
- Updates the `cosmos` and `fetchai` ledger plugins to use `PyCryptodome` for `ripemd160` hash generation
- Adds support for publishing byte strings directly to IPFS daemons without intermediate file storage on the `IPFS` plugin

Chores:
- Pins `tox` version using `tomte` in the CI to maintain version consistency
- Pins `go` version to `v1.17.7` on the CI

AEA:
- Fixes the mechanism to convert the `json` path to environment variable string
- Updates the process of agent subprocess termination to make sure we properly terminate agents across the various operating systems
- Introduces `reraise_as_click_exception` to re-raise exceptions as `click.ClickExceptions` on command definitions
- Extends `CliRunner` to allow usage of `capfd` to capture test output
- Introduces `generate_env_vars_recursively` method to auto generate the environment variable names for component overrides
- Extends `aea generate-key` to support creating multiple keys
- Extends the package manager API to
- Update the hashes for third party packages with a warning
- Update the dependency hashes when locking packages
- Verifying the dependency hashes when verifying packages
- Adds deprecation warning for `aea hash all` command since the same functionality is now being provided by `aea packages lock` command

Tests:
- Updates `libp2p` tests to use `capsys` to read `stdout` instead of patching `sys.stdout`
- Re enables tests skipped with ` need remote registry` comment
- Adds tests for package manager API

Chores:
- Updates the `tox` environment setting for unit tests to report duration of tests
- Deprecates the usage of `aea hash all` command from the workflow

AEA:
- Adds deprecation warning for `--aev` flag
- Makes the usage of environment variables default
- Extends `push-all` command to push only the development packages
- Adds support for generating environment variable names if not provided by default
- Changes log level from `debug` to `error` on `Exception` handling
- Updates the configuration loader classes to make sure path string serialization is deterministic across the various platforms

Test:
- Fixes the tests skipped because of the wrongly configures ledger ID
- Adds tests to check if path string serialization is deterministic across the various platforms

Chores:
- Updates `scripts/check_ipfs_hashes_pushed.py` to use new `packages.json` format