feat(#307): add more CRUD functions

[Decipher]

Types of changes

• Bug fix (a non-breaking change which fixes an issue)
• New feature (a non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Description

• Added createResource method
• Added updateResource method

Checklist:

• My change requires a change to the documentation.
• I have updated the documentation accordingly. (PR: #)
• I have added tests to cover my changes (if not applicable, please state why)
• All new and existing tests are passing.

Screenshots/Media:

[changeset-bot]

🦋 Changeset detected

Latest commit: ebb8144

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 10 packages

Name	Type
druxt	Minor
druxt-entity	Minor
druxt-blocks	Patch
druxt-breadcrumb	Patch
druxt-menu	Patch
druxt-router	Patch
druxt-schema	Patch
druxt-site	Patch
druxt-test-utils	Major
druxt-views	Patch

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[codecov]

Codecov Report

Merging #321 (ebb8144) into develop (ee15810) will increase coverage by 0.16%.
The diff coverage is 79.16%.

@@             Coverage Diff             @@
##           develop     #321      +/-   ##
===========================================
+ Coverage    96.43%   96.59%   +0.16%     
===========================================
  Files           89       89              
  Lines         2802     2819      +17     
  Branches       590      595       +5     
===========================================
+ Hits          2702     2723      +21     
+ Misses          90       85       -5     
- Partials        10       11       +1     

Impacted Files	Coverage Δ
packages/druxt/src/client.js	93.44% <73.68%> (+0.23%)	⬆️
packages/entity/src/components/DruxtEntityForm.vue	100.00% <100.00%> (+14.81%)	⬆️
packages/druxt/src/stores/druxt.js	73.72% <0.00%> (+0.84%)	⬆️

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