Add script for Cirrus CI for testing on FreeBSD

[giordano]

Like JuliaAstro/ERFA.jl#40

[coveralls]

Pull Request Test Coverage Report for Build 154

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 97.561%

---

Totals
Change from base Build 153:	0.0%
Covered Lines:	920
Relevant Lines:	943

---

💛 - Coveralls

[coveralls]

Pull Request Test Coverage Report for Build 154

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 97.561%

---

Totals
Change from base Build 153:	0.0%
Covered Lines:	920
Relevant Lines:	943

---

💛 - Coveralls

[coveralls]

Pull Request Test Coverage Report for Build 154

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 97.561%

---

Totals
Change from base Build 153:	0.0%
Covered Lines:	920
Relevant Lines:	943

---

💛 - Coveralls

[coveralls]

Pull Request Test Coverage Report for Build 154

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 97.561%

---

Totals
Change from base Build 153:	0.0%
Covered Lines:	920
Relevant Lines:	943

---

💛 - Coveralls

[codecov-io]

Codecov Report

Merging #8 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master       #8   +/-   ##
=======================================
  Coverage   97.56%   97.56%           
=======================================
  Files          26       26           
  Lines         944      944           
=======================================
  Hits          921      921           
  Misses         23       23

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 4f67140...865429e. Read the comment docs.

[helgee]

Awesome 👍