feat: Partial CouchDB implementation of new storage interface (#41)

Remaining methods to be implemented in further PRs.

Signed-off-by: Derek Trider <Derek.Trider@securekey.com>

Author: Derek Trider

.github/workflows/newstorage-couchdb.yml

@@ -0,0 +1,51 @@
+#
+# Copyright SecureKey Technologies Inc. All Rights Reserved.
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+name: storage-couchdb
+on:
+  push:
+    paths:
+      - 'component/newstorage/couchdb/**'
+  pull_request:
+    paths:
+      - 'component/newstorage/couchdb/**'
+jobs:
+  linter:
+    name: Go linter
+    timeout-minutes: 10
+    env:
+      LINT_PATH: component/newstorage/couchdb
+    runs-on: ubuntu-18.04
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Checks linter
+        timeout-minutes: 10
+        run: make lint
+  unitTest:
+    name: Unit test
+    runs-on: ubuntu-18.04
+    timeout-minutes: 15
+    env:
+      UNIT_TESTS_PATH: component/newstorage/couchdb
+    steps:
+      - name: Setup Go 1.15
+        uses: actions/setup-go@v2
+        with:
+          go-version: 1.15
+        id: go
+
+      - uses: actions/checkout@v2
+
+      - name: Run unit test
+        timeout-minutes: 15
+        run: make unit-test
+
+      - name: Upload coverage to Codecov
+        timeout-minutes: 10
+        if: github.repository == 'hyperledger/aries-framework-go-ext'
+        uses: codecov/codecov-action@v1.0.14
+        with:
+          file: ./coverage.out

component/newstorage/couchdb/go.mod

@@ -0,0 +1,19 @@
+// Copyright SecureKey Technologies Inc. All Rights Reserved.
+//
+// SPDX-License-Identifier: Apache-2.0
+module github.com/hyperledger/aries-framework-go-ext/component/newstorage/couchdb
+
+go 1.15
+
+require (
+	github.com/cenkalti/backoff v2.2.1+incompatible
+	github.com/go-kivik/couchdb/v3 v3.2.5
+	github.com/go-kivik/kivik/v3 v3.2.3
+	github.com/google/uuid v1.1.2
+	github.com/hyperledger/aries-framework-go v0.1.6-0.20210111225112-7200091513d3
+	github.com/hyperledger/aries-framework-go-ext/test/component/newstorage v0.0.0
+	github.com/ory/dockertest/v3 v3.6.3
+	github.com/stretchr/testify v1.6.1
+)
+
+replace github.com/hyperledger/aries-framework-go-ext/test/component/newstorage => ../../../test/component/newstorage