Add die feed/release methods for json/yaml

[scothis]

Errors now result in a panic rather than being ignored.

New die methods:

// DieFeedJSON returns a new die with the provided JSON. Panics on error.
DieFeedJSON(j []byte) *MyResourceDie

// DieFeedYAML returns a new die with the provided YAML. Panics on error.
DieFeedYAML(y []byte) *MyResourceDie

// DieFeedYAMLFile returns a new die loading YAML from a file path. Panics on error.
DieFeedYAMLFile(name string) *MyResourceDie

// DieReleaseJSON returns the resource managed by the die as JSON. Panics on error.
DieReleaseJSON() []byte

// DieReleaseYAML returns the resource managed by the die as YAML. Panics on error.
DieReleaseYAML() []byte

[codecov]

Codecov Report

Merging #98 (9f578e3) into main (73ae377) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main      #98   +/-   ##
=======================================
  Coverage   10.31%   10.31%           
=======================================
  Files          64       64           
  Lines        3102     3102           
=======================================
  Hits          320      320           
  Misses       2780     2780           
  Partials        2        2           

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