Add all JSON Schemes for Tekton resources

[evidolob]

PR provides all schemes Tekton resources, schemes taken from redhat-developer/intellij-tekton#148

Fix: #258

Depends on redhat-developer/vscode-yaml#315

Do not merge until redhat-developer/vscode-yaml#315 is merged and released

[codecov-commenter]

Codecov Report

Merging #367 into master will decrease coverage by 0.24%.
The diff coverage is 24.13%.

@@            Coverage Diff             @@
##           master     #367      +/-   ##
==========================================
- Coverage   73.85%   73.60%   -0.25%     
==========================================
  Files          47       47              
  Lines        3435     3452      +17     
  Branches      638      641       +3     
==========================================
+ Hits         2537     2541       +4     
- Misses        898      911      +13     

Impacted Files	Coverage Δ
src/yaml-support/tkn-yaml-scheme-generator.ts	28.57% <11.11%> (-3.14%)	⬇️
src/yaml-support/tkn-yaml.ts	87.13% <15.38%> (-3.17%)	⬇️
src/yaml-support/tkn-yaml-schema.ts	45.58% <27.27%> (+3.16%)	⬆️
src/yaml-support/tkn-scheme-storage.ts	94.11% <80.00%> (-5.89%)	⬇️

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[sudhirverma]

should we keep file name as v1alpha1? and how I can generate this JSON?

[evidolob]

As I say in description, I take schemas from redhat-developer/intellij-tekton#148
intellij-tekton has code to generate schemas.

[sudhirverma]

can we keep file name as v1beta1 instead of v1alpha1? as we are supporting v1beta1 for most of the cases?

[evidolob]

we have 2 schemes one for v1alpha1 another for v1beta1