Add fromPath to IntervalList.

[nh13]

I added a fromPath method that is analogous to the fromFile static method in IntervalList. I added a simple test to make both behave similarly.

[codecov-io]

Codecov Report

Merging #846 into master will increase coverage by 0.959%.
The diff coverage is 85.714%.

@@              Coverage Diff               @@
##             master      #846       +/-   ##
==============================================
+ Coverage     64.86%   65.819%   +0.959%     
- Complexity     7195      7552      +357     
==============================================
  Files           527       527               
  Lines         31781     33334     +1553     
  Branches       5424      5889      +465     
==============================================
+ Hits          20613     21940     +1327     
- Misses         9020      9181      +161     
- Partials       2148      2213       +65

Impacted Files	Coverage Δ	Complexity Δ
src/main/java/htsjdk/samtools/util/IOUtil.java	30.945% <100%> (+0.879%)	60 <2> (+1)	⬆️
...c/main/java/htsjdk/samtools/util/IntervalList.java	64.879% <80%> (+0.091%)	84 <3> (+27)	⬆️
.../main/java/htsjdk/samtools/fastq/FastqEncoder.java	48.276% <0%> (-34.483%)	7% <0%> (-5%)
...rc/main/java/htsjdk/samtools/SAMProgramRecord.java	67.568% <0%> (-8.108%)	13% <0%> (-2%)
src/main/java/htsjdk/samtools/SAMFileHeader.java	55.625% <0%> (-3.559%)	34% <0%> (ø)
.../htsjdk/samtools/util/AbstractRecordAndOffset.java	73.333% <0%> (-3.137%)	16% <0%> (+7%)
.../main/java/htsjdk/samtools/SAMReadGroupRecord.java	48.276% <0%> (-1.724%)	16% <0%> (-1%)
...ain/java/htsjdk/samtools/fastq/FastqConstants.java	0% <0%> (ø)	0% <0%> (ø)	⬇️
src/main/java/htsjdk/tribble/Feature.java	0% <0%> (ø)	0% <0%> (ø)	⬇️
... and 33 more

[nh13]

@yfarjoun or @droazen care to review?

[lbergelson]

You might want to use the more ugly path.toUri().toString() because the path.toString() tends to drop the scheme.

[yfarjoun]

please use toUri() to include the scheme, then 👍