chore: use cdk

[pseudo-su]

Switch to using the CDK directly instead of SST. Attempting to use the sam-beta-cdk to facliitate local development.

Currently the sam-beta-cdk panic's with the following error when trying to run the APIs locally

> sam-beta-cdk local start-api

Synthesizing CDK App
Traceback (most recent call last):
  File "/usr/local/bin/sam-beta-cdk", line 8, in <module>
    sys.exit(cli())
  File "/usr/local/Cellar/aws-sam-cli-beta-cdk/202107140310/libexec/lib/python3.8/site-packages/click/core.py", line 829, in __call__
    return self.main(*args, **kwargs)
  File "/usr/local/Cellar/aws-sam-cli-beta-cdk/202107140310/libexec/lib/python3.8/site-packages/click/core.py", line 782, in main
    rv = self.invoke(ctx)
  File "/usr/local/Cellar/aws-sam-cli-beta-cdk/202107140310/libexec/lib/python3.8/site-packages/click/core.py", line 1259, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/usr/local/Cellar/aws-sam-cli-beta-cdk/202107140310/libexec/lib/python3.8/site-packages/click/core.py", line 1259, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/usr/local/Cellar/aws-sam-cli-beta-cdk/202107140310/libexec/lib/python3.8/site-packages/click/core.py", line 1066, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/usr/local/Cellar/aws-sam-cli-beta-cdk/202107140310/libexec/lib/python3.8/site-packages/click/core.py", line 610, in invoke
    return callback(*args, **kwargs)
  File "/usr/local/Cellar/aws-sam-cli-beta-cdk/202107140310/libexec/lib/python3.8/site-packages/samcli/lib/iac/utils/helpers.py", line 50, in wrapper
    iac_plugin, project = get_iac_plugin(project_type, kwargs, with_build)
  File "/usr/local/Cellar/aws-sam-cli-beta-cdk/202107140310/libexec/lib/python3.8/site-packages/samcli/lib/iac/utils/helpers.py", line 40, in get_iac_plugin
    project = iac_plugin.get_project(lookup_paths)
  File "/usr/local/Cellar/aws-sam-cli-beta-cdk/202107140310/libexec/lib/python3.8/site-packages/samcli/lib/iac/cdk/plugin.py", line 114, in get_project
    project = self._get_project_from_cloud_assembly(cloud_assembly_dir)
  File "/usr/local/Cellar/aws-sam-cli-beta-cdk/202107140310/libexec/lib/python3.8/site-packages/samcli/lib/iac/cdk/plugin.py", line 211, in _get_project_from_cloud_assembly
    stacks: List[Stack] = [self._build_stack(cloud_assembly, ca_stack) for ca_stack in cloud_assembly.stacks]
  File "/usr/local/Cellar/aws-sam-cli-beta-cdk/202107140310/libexec/lib/python3.8/site-packages/samcli/lib/iac/cdk/plugin.py", line 211, in <listcomp>
    stacks: List[Stack] = [self._build_stack(cloud_assembly, ca_stack) for ca_stack in cloud_assembly.stacks]
  File "/usr/local/Cellar/aws-sam-cli-beta-cdk/202107140310/libexec/lib/python3.8/site-packages/samcli/lib/iac/cdk/plugin.py", line 232, in _build_stack
    self._build_resources_section(assets, ca_stack, cloud_assembly, section, section_dict)
  File "/usr/local/Cellar/aws-sam-cli-beta-cdk/202107140310/libexec/lib/python3.8/site-packages/samcli/lib/iac/cdk/plugin.py", line 292, in _build_resources_section
    asset = assets[asset_path]
KeyError: '/Development/golang-serverless-cdk-template/.aws-sam/.cdk-out/asset.11b1fbd97647ec3b4f3f2f3fd5c7fa53f0386bfd5cc831be00cb829546b5e262'
make: *** [dev] Error 1