Add modulefile to configure environment variables.

[kris-rowe]

Description

Adds an environment module, which is installed as part of the CMake build.

Usage

> module use -a <install-directory>/modulefiles
> module load occa

[codecov]

Codecov Report

Merging #580 (5672406) into development (9b47900) will increase coverage by 77.26%.
The diff coverage is n/a.

❗ Current head 5672406 differs from pull request most recent head 0e652a4. Consider uploading reports for the commit 0e652a4 to get more accurate results

@@               Coverage Diff                @@
##           development     #580       +/-   ##
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+ Coverage             0   77.26%   +77.26%     
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  Files                0      264      +264     
  Lines                0    19537    +19537     
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+ Hits                 0    15096    +15096     
- Misses               0     4441     +4441     

Impacted Files	Coverage Δ
src/occa/internal/lang/token/identifierToken.cpp	100.00% <0.00%> (ø)
src/occa/internal/lang/operator.cpp	75.59% <0.00%> (ø)
src/occa/internal/lang/file.cpp	94.11% <0.00%> (ø)
src/occa/internal/lang/expr/parenthesesNode.cpp	66.66% <0.00%> (ø)
src/occa/internal/utils/string.cpp	85.33% <0.00%> (ø)
src/occa/internal/lang/token/functionToken.cpp	80.00% <0.00%> (ø)
src/occa/internal/lang/expr/emptyNode.cpp	91.66% <0.00%> (ø)
src/occa/internal/lang/scope.cpp	55.35% <0.00%> (ø)
src/occa/internal/lang/type/array.cpp	65.00% <0.00%> (ø)
include/occa/core/memory.tpp	100.00% <0.00%> (ø)
... and 254 more