API testing: split out more test cases

EVP into test_evp_cipher, test_evp_digest, test_evp_pkey and test_evp.
OBJ into test_ossl_obj.
OpenSSL RAND into test_ossl_rand.
OpenSSL PKCS7 and PKCS12 tests into test_ossl_p7p12.
CertificateManager into test_certman.

Move some BIO tests from api.c into test_evp_bio.c.

Fix line lengths.

Author: SparkiDev

CMakeLists.txt

@@ -2705,6 +2705,13 @@ if(WOLFSSL_EXAMPLES)
         tests/api/test_ossl_x509_str.c
         tests/api/test_ossl_x509_lu.c
         tests/api/test_ossl_pem.c
+        tests/api/test_ossl_rand.c
+        tests/api/test_ossl_obj.c
+        tests/api/test_ossl_p7p12.c
+        tests/api/test_evp_digest.c
+        tests/api/test_evp_cipher.c
+        tests/api/test_evp_pkey.c
+        tests/api/test_certman.c
         tests/api/test_tls13.c
         tests/srp.c
         tests/suites.c