EchoProto templates should extend a superclass

[Brad0440]

• [x] Create a superclass for EchoProto templates
• [x] Re-work all EchoProto templates to extend the template superclass

[Brad0440]

This has now been completed. See the following commits:

• https://github.com/intbio-ncl/BiomationScripterLib/commit/28193da776c4bade4b3a753b6dbe007a9d3ebbc1
• https://github.com/intbio-ncl/BiomationScripterLib/commit/c8faad7a62cb487d00bddb0881f81d8417054c39
• https://github.com/intbio-ncl/BiomationScripterLib/commit/44d559c3f1c91c4034bc663fec6d92d998e03ab8