Address ignored fortitude rules for Fortran

[yaswant]

Programming language: Fortran

See fortitude.toml

Rules that are currently ignored:

• C002 interface-implicit-typing. Linting to reduce number of Fortitude exemptions #22
• C003 implicit-external-procedures
• C061 missing-intent. Linting to reduce number of Fortitude exemptions #22
• C071 assumed-size
• C072 assumed-size-character-intent
• C081 initialisation-in-declaration. Linting to reduce number of Fortitude exemptions #22
• C121 use-all. Linting to reduce number of Fortitude exemptions #22
• C141 missing-exit-or-cycle-label
• E001 syntax-error
• MOD011 old-style-array-literal. Linting to reduce number of Fortitude exemptions #22
• MOD021 deprecated-relational-operator. Linting to reduce number of Fortitude exemptions #22
• S061 unnamed-end-statement. Linting to reduce number of Fortitude exemptions #22

[t00sa]

Partially addressed by #22. See summary for details of fixes and outstanding tasks.